Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3f30610772f16a…

MALICIOUS

PDF

82.2 KB Created: 2021-03-25 10:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b8e64051780a58720ab88926064d9ceb SHA-1: 1f2fa266060ebb75ae7faf96c6dd3900d27764f9 SHA-256: ed3f30610772f16aaafb117bd8e458891fe15ff2f2f184494b209a342807bd31
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 0.9995

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://bologen.ru/wix?keyword=apk+mirror+play+store+android+2.2 PDF link annotation
    • http://lerob.info/sojivikuptqrdh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401989/normal_5fcd62c37a22b.pdfIn PDF document text
    • http://chambreop.xyz/how_fast_does_a_taotao_110cc_go0tmee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502178/normal_601b50684be3a.pdfIn PDF document text
    • http://makedctl.site/rakabuvorugiol046.pdfIn PDF document text
    • http://opencabinets.xyz/vixifaxzikn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418399/normal_5fe61e4c8803f.pdfIn PDF document text
    • http://yarrebitteh.online/jebugodabuxm5r6a.pdfIn PDF document text
    • http://sozaxesugoj.mywebcommunity.org/revudozanaxejo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447434/normal_60344ca174a03.pdfIn PDF document text
    • http://vexoxem.scienceontheweb.net/32922912014.pdfIn PDF document text
    • http://maska-respirator.shop/18108264269w1hf6.pdfIn PDF document text
    • http://www.cat-mario.com/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_2e6b0f46269a4ca091b538e014b6b345.pdf?index=trueIn PDF document text
    • http://koduwutuvage.onlinewebshop.net/mozafenalufekizozew.pdfIn PDF document text
    • http://lofomaseforuz.rf.gd/94943013931.pdfIn PDF document text
    • https://bac325b5-3710-4a60-ba01-c1ac5e8a7650.filesusr.com/ugd/c111de_b16c1516fe864312b7b22a6120fd0694.pdf?index=trueIn PDF document text
    • http://senoburem.epizy.com/who_wrote_i_am_a_child_of_god.pdfIn PDF document text
    • https://e33362eb-94ba-4427-a888-6f4863169a18.filesusr.com/ugd/36ce96_5a8ef6d7dffc48b4b7ba21f8f0eb97ce.pdf?index=trueIn PDF document text
    • http://tubasip.epizy.com/kikojezaziwarilazo.pdfIn PDF document text
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_d43dd23d5f4f4af1a2d1e9ff02f32b30.pdf?index=trueIn PDF document text
    • https://87da31d5-d184-45e7-a456-0ad082c8bd65.filesusr.com/ugd/55e94a_91ea5ae39ae24065bc465a106d8ca202.pdf?index=trueIn PDF document text
    • http://lewupidofiji.epizy.com/didorefak.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC1 5424 bytes
SHA-256: 0e5cb3f5ea86433535681920cabf88fd70458895649eac89669ae10136859c9e
font_01_sfnt_off00010122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10122 5360 bytes
SHA-256: 92fdf64f4c30946b08e0aa56a5e0d7eebe7bfea080ff8817bf1d4ee9ab0d0567
font_02_sfnt_off0001146a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146A 10756 bytes
SHA-256: b56bea44b3be45e4033754453878346a1eec745baea926f8d3c4465ab8cf2d29

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