Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2cef11101a5579…

MALICIOUS

PDF

71.1 KB Created: 2021-03-19 16:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3600c0051e8299b3f34ae84f83e67926 SHA-1: 9682c32972d25e393744bb9a407202d25ca3188a SHA-256: ce2cef11101a5579e7bfabf4c084d0f7fd59fdc594a8cc859421090eabad583c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9991

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://baarspo.ru/123?utm_term=pa+boating+test+answers PDF link annotation
    • http://magnifioco.site/dd_3.5_elder_evils_downloadrv470.pdfIn PDF document text
    • http://cocobeautybar.ca/voice_changer_free_download4t7aa.pdfIn PDF document text
    • https://nipoxumafoji.weebly.com/uploads/1/3/4/7/134717148/fofipegibugo.pdfIn PDF document text
    • http://24magazine.ru/wupumekosugoverozumub0pht2.pdfIn PDF document text
    • https://sirutobij.weebly.com/uploads/1/3/0/7/130776617/ff2db72.pdfIn PDF document text
    • https://kibodoru.weebly.com/uploads/1/3/2/6/132695707/losugu-mujozim-kogowaw-nabufezipomu.pdfIn PDF document text
    • http://bella24.xyz/what_are_some_examples_of_biotic_limiting_factorsyf2zf.pdfIn PDF document text
    • http://creamwalls.space/nezofubepoziledugafepuzi3zx2u.pdfIn PDF document text
    • https://kinijanara.weebly.com/uploads/1/3/4/5/134585029/dekebuxasuter_gewutesabujuf.pdfIn PDF document text
    • http://meetly.space/chemical_structure_of_oil_moleculewq2tn.pdfIn PDF document text
    • https://bopilopuneliniw.weebly.com/uploads/1/3/5/3/135304065/nominudaxefu.pdfIn PDF document text
    • http://activa-fb.com/fepukinoxabiderasebibo08qpf.pdfIn PDF document text
    • http://hesap-al-sat.com/lisan_ul_quran_malayalam_guide_7w89ks.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d67f99-9aa8-4550-9f39-ba4e730606db/gipela.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/xududamowibexej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/941d320c-05c6-43e7-b6ba-c81facc1635c/35169028932.pdfIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_7135ea1f86ea422fb6c2d63f8a20b8fc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e922b5-107c-479d-b441-6b7e1b41010e/the_boy_in_the_striped_pyjamas_brunos_father_character_profile.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/kibaru.pdfIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_dc3479c7dd744441882402de2b385e40.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e89af33-184a-48fa-9037-77e725a10388/the_dynamic_laws_of_prosperity_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/mixevubepu.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/15273884130.pdfIn PDF document text
    • https://510adc33-753b-44c0-977e-8d34da8fcdd4.filesusr.com/ugd/5f4192_83c13a32de7e49dda64ef4464034e643.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD920 5056 bytes
SHA-256: 884e4f1cfd95726c97e43631525f31cf571bba1462d4d1ddd8cae8cca1cbc410
font_01_sfnt_off0000ea72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA72 10696 bytes
SHA-256: d3b3dd3b8e22fce47340834b1b2bb455d9d3c1d48ac3157d8c1ea0a0f50b4a61

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