Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed8fc51a42d1269…

MALICIOUS

PDF

78.0 KB Created: 2021-04-06 08:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bdd21c9cad04331d5d112a4e5260d921 SHA-1: 5621034a0c3062714de7ca6f1869c6a59e9d85b6 SHA-256: 8ed8fc51a42d1269bd0ba1e03e6c6a2295803a4de1c8b529b29b529a0011ae70
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 0.9998

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://lozipotod.ru/award?keyword=jurnal+amalan+gaya+hidup+sihat+pdf PDF link annotation
    • http://yarrebitteh.online/94603999238j817c.pdfIn PDF document text
    • http://catsism.com/2005_dodge_grand_caravan_3.8_oil_capacityds83g.pdfIn PDF document text
    • http://kinorio5.xyz/556284719984g3oq.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/D8ifij3/27208998277.pdfIn PDF document text
    • http://devicesprotectionforusers.site/vijubopa07xhl.pdfIn PDF document text
    • http://lnstagramverifycentre.com/what_is_co-curricular_activities_in_educationv1rlb.pdfIn PDF document text
    • http://arbitestpark.xyz/who_are_all_the_characters_in_the_lotterysth7t.pdfIn PDF document text
    • http://edevletorg.com/hookah_bar_video_song_free84enh.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/w5dVMji/voice_recorder_on_iphone_11_pro.pdfIn PDF document text
    • http://uspeh.icu/79816210610ioa3b.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/euPQ7jb/3dtuning_mod_apk.pdfIn PDF document text
    • http://zelopaqq.xyz/alexander_video_song19n3m.pdfIn PDF document text
    • http://emirofficialzm.com/wawalomureletibbi5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/schwinn_ad6_user_manual.pdfIn PDF document text
    • https://f59c0a4d-c104-43ac-8966-a5978cdf1b8c.filesusr.com/ugd/0c1ebd_5a20e0c1cb6b4d73829b4d2806545214.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lezerawe/modal_verbs_exercises_with_answers.pdfIn PDF document text
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_6db69b43cac14235b1a7e435831abd8e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/48037528380.pdfIn PDF document text
    • https://76ed6b59-b034-43ac-b949-e1c08f76e3cb.filesusr.com/ugd/ee6100_b820ec79cb764467a156fa7fffe22c16.pdf?index=trueIn PDF document text
    • https://30621b86-6952-4b41-80af-4d24d830bc7c.filesusr.com/ugd/122077_09fd55e160624246bd124e76fe6ef501.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

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_off0000f263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF263 5544 bytes
SHA-256: bbe179d47488496bbc9c3242e3ee6e186686c4456c355ec5c4464b74c3bc5beb
font_01_sfnt_off0001051c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051C 11020 bytes
SHA-256: 2e494e72879119149f315951ea3086f1a81b0e1f7698342e4696ba7f92d577b2

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