Malicious PDF — malware analysis report

Static analysis result for SHA-256 01fccdce8379d890…

MALICIOUS

PDF

92.9 KB Created: 2021-04-04 12:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 24cb10631465aa2cfb822d1c7aab432b SHA-1: b60c0fe3e379e1bab1112dc49534d8ac234d6250 SHA-256: 01fccdce8379d890876cef87a461a616325654307652a137513a19a4fac20a9d
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs, with at least one identified as potentially malicious (soxebez.ru). The document's structure and the presence of many external links suggest an attempt to direct users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://soxebez.ru/123?utm_term=alric+ft+manqonqo PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366961/normal_5fcbfe29cfb6a.pdfIn PDF document text
    • http://cactusvpn.live/sasisirp2f.pdfIn PDF document text
    • http://pomirkapa.site/hollywood_animals_movie_tamil_dubbed_free9vr5k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424013/normal_60291d35cb90b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_603b7898e80d4.pdfIn PDF document text
    • http://familyit.pro/89597095422wg0fo.pdfIn PDF document text
    • http://899themes-demo.ru/99508611838d7xxt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/da233d93-117f-4c35-b314-3e630a684b62/can_i_lose_weight_on_a_1400_calorie_diet.pdfIn PDF document text
    • https://6f672a44-e16c-4921-a0f1-e3781c0647c5.filesusr.com/ugd/bda22a_9ab94175b4284aaaab3e0a7f9bff25b3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bafc0f77-a42b-473d-a420-eef78ef65ab7/24925258964.pdfIn PDF document text
    • https://e5baaea7-7007-41de-9367-4ebf3ed55875.filesusr.com/ugd/8e1900_1981d8c9eca8484bb448d0a5097e9a02.pdf?index=trueIn PDF document text
    • https://0e01c86c-6ad9-43de-bc04-b8819f410213.filesusr.com/ugd/73c254_6d045c7b12c34e4dbe06e0dc163afc01.pdf?index=trueIn PDF document text
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_a0b204743de4428299f5f8649b0077d1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/82c47846-e77b-4f5e-ae0b-5bd8ac84dadb/what_are_the_names_of_carpenter_tools.pdfIn PDF document text
    • https://4b002d3c-a55f-42ce-816c-238f848e88a9.filesusr.com/ugd/3398cc_8eb3fee352784eab8c4995531a96d265.pdf?index=trueIn PDF document text
    • https://4eff3ec4-d147-45d1-be73-876d9e1d0019.filesusr.com/ugd/efb3f0_06dbb8844cd1414fac805a9c5ab0c131.pdf?index=trueIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_3d648690f7214acf8f6a2743a6106533.pdf?index=trueIn PDF document text
    • https://ac614e2c-2e00-43e4-a80f-2c6bce9fb64b.filesusr.com/ugd/f103bb_3ac2a48f65e3476d8e01535a5638e8fd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/aac22dc4-fb38-42ff-9517-c2bab47f177d/volume_of_a_cylinder_worksheet_answer_key.pdfIn PDF document text
    • https://7133fc40-0b9c-4701-b953-e7fafc934b44.filesusr.com/ugd/70a38d_943a72069054475f992df946e05cf311.pdf?index=trueIn PDF document text
    • https://ce419959-236d-4487-89d7-67f356bda573.filesusr.com/ugd/147b51_5d245d0a5fe447a694c01d0fd607f62c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/748e94c0-e61b-492d-bcfb-5ce4bb045fd5/58208169995.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2F 4636 bytes
SHA-256: 9cd2a026abba6d9e6c82002ce2ab09cac971a07c09e6ac414281edb5aa5d0eda
font_01_sfnt_off00010db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB3 2448 bytes
SHA-256: fea4ad3fba8ae1bde086e5e7451289699c5a7d6ab2dc7d9def7395598f1548f8
font_02_sfnt_off00011885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11885 12272 bytes
SHA-256: 7c854b692b3865bd0b1a9767ece4124d1ab5cb842799f425901031c58edbc34a
font_03_sfnt_off00014228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14228 16144 bytes
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174
font_04_sfnt_off00015727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15727 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.