Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7148a9e1350942…

MALICIOUS

PDF

95.3 KB Created: 2021-03-21 21:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 390edda46d536067d1358e117d318f21 SHA-1: 56fbfcef11d3f4a34f040570a13cd824865465c2 SHA-256: 0e7148a9e1350942f8d1d8a4bc562a37d143bab540370f6589f3cabf2d05b5e6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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://seumenha.ru/wix?keyword=sony+icf-c1+service+manual PDF link annotation
    • https://cdn.sqhk.co/pejibuti/FL88hg5/dead_effect_3_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/nujidegowupi/6Yt0yT7/silicon_valley_humane_society_spay.pdfIn PDF document text
    • http://zozegakipuvi.iblogger.org/cell_cycle_phases.pdfIn PDF document text
    • https://cdn.sqhk.co/bumadawab/fEdlifd/rival_stars_basketball_mod_apk_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://uploads.strikinglycdn.com/files/67c4f46b-6422-4806-a039-ac9550d0f6f7/pubesavesadivetawixunow.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/haywyre_piano_sheet_music.pdfIn PDF document text
    • https://8316a071-1c81-4729-bbc9-bb84f51c1359.filesusr.com/ugd/b2ba6b_6b04a74cf5904badab608d9a001cd2bb.pdf?index=trueIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_5d5a318acf2d441b901da696eb7cd133.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d8fe3c-ea4d-4a29-84a4-48b5875fe6aa/go_tell_it_on_the_mountain_guitar_chords_in_d.pdfIn PDF document text
    • https://68e1e3d4-268d-49bc-a8aa-b119cb10fea7.filesusr.com/ugd/3ceeb9_ad025ceb5f8d449eab36f6f61463f597.pdf?index=trueIn PDF document text
    • http://sisogekolavisul.epizy.com/bagian_bagian_bunga_dan_fungsinya.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a37f161a-caa4-4c87-9c0c-c378b53d6411/97372596085.pdfIn PDF document text
    • https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_2ecd1586f085430c81627f3921958f73.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/python_datetime_parse_format.pdfIn PDF document text
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_89cadfa04fd64e0c99061a66a488430d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ce14a4-16f8-42be-bda3-1e47e3f3c1b2/dupujofilitikafavanavasap.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://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEA 5376 bytes
SHA-256: 810bb7cb575c873d5e6e7920d8f412e3b86a10bcd3435ce368cebc21c2af72ed
font_01_sfnt_off00010d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3B 20576 bytes
SHA-256: 4ca2dea41df54d757a296bf7654863bdda18f91015507ca9a28487c6d404d224
font_02_sfnt_off00012c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C23 2232 bytes
SHA-256: a24e74d48a6b1b30369047404e69fe3802037923cfa8b7abb35dfa8f527769f9
font_03_sfnt_off000135b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135B9 11104 bytes
SHA-256: 5b93e743258315d2f32f69506e7a4a514f651db19a605a57660b0e90c8a44367
font_04_sfnt_off00015bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BB5 6360 bytes
SHA-256: 0c40e7c9706bb5a6f7bf9609653c4988f690b4d54860e9858fbf1ddb43ac82ac