Malicious PDF — malware analysis report

Static analysis result for SHA-256 e889818262e2910a…

MALICIOUS

PDF

70.7 KB Created: 2021-03-23 05:37:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 32fae7478236228d5f754b1203ea14b0 SHA-1: b17d862d853f8c7edde6e5afe613cbd23b3e7d70 SHA-256: e889818262e2910ae994e4c72606fee049aa2a5633d21b27bedde3538895e3c3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure, likely attempting to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/aws?utm_term=2020+toyota+tacoma+head+unit+wiring+diagram PDF link annotation
    • http://xuzobinemipivor.mygamesonline.org/the_haunting_of_hill_house_novel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495251/normal_604e1d1b34563.pdfIn PDF document text
    • http://avtovishki-msk.ru/gireng6l1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375073/normal_5ffd6f4ea51b1.pdfIn PDF document text
    • http://healingtunes.ru/91665495571fswd0.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/ruvomuxajasuj.pdfIn PDF document text
    • http://obsluzhivanie-kompyuterov.moscow/kavupamutudexenur0g3yw.pdfIn PDF document text
    • http://mgacessoria.online/playable_races_warhammer_total_war_2om0yx.pdfIn PDF document text
    • http://muwiduvepobuz.mygamesonline.org/solar_air_heating_systems.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_86fe100c18624d7590fde389585b8f4c.pdf?index=trueIn PDF document text
    • https://0e01c86c-6ad9-43de-bc04-b8819f410213.filesusr.com/ugd/73c254_c455949015034bff980fb16fb5ef66af.pdf?index=trueIn PDF document text
    • https://b23ebcb4-2e41-4c68-a408-584c84124782.filesusr.com/ugd/5a2446_ff19c2a53929445bbbf27e1851265bbd.pdf?index=trueIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_a4e6e7cbb77c4931928b68ad03441e94.pdf?index=trueIn PDF document text
    • https://1c019786-7048-4615-837a-ae53f087c4ae.filesusr.com/ugd/8b4172_94ec3c2ba4ef4e06990a601b7aeaf94b.pdf?index=trueIn PDF document text
    • https://184d393c-d2ff-49e5-bbcb-48626b1dbf88.filesusr.com/ugd/49be48_46bd7e95beb64f1abd0f7d64db630b0c.pdf?index=trueIn PDF document text
    • http://wijogural.epizy.com/renefimope.pdfIn PDF document text
    • https://f0f855fd-29d2-4bf6-9fdd-af1de8d1f91d.filesusr.com/ugd/184831_fc4e889749bb4243ad0b90e0ed2aaf30.pdf?index=trueIn PDF document text
    • https://a50dbba5-e4fd-40cc-afa9-a45495a5accf.filesusr.com/ugd/7f929b_6e754d1a804c47b9ba5325e9ae7afd32.pdf?index=trueIn PDF document text
    • http://valamujunitun.epizy.com/dabipimizisux.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EA 5516 bytes
SHA-256: 3581b091488841ee7241f64e2d52071111c7fffe64f8316fbd9ab867018241e0
font_01_sfnt_off0000e996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE996 10080 bytes
SHA-256: 62e78e7cbdc10bd788feac58ddecccde722e819f7333e5327c04853dd32f26f3

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