Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b7a476481d6f01…

MALICIOUS

PDF

77.2 KB Created: 2021-03-15 06:14:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a7612ea1aaa08d549faf3fa2e9a450aa SHA-1: 5a6d017f1d017c0d33b0171653d9ce5cc9e93cf0 SHA-256: e1b7a476481d6f01fabc8ca86dc1c35420cde0449276d5582ed3911c064282a3
134 Risk Score

Malware Insights

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

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/award?keyword=autocad+electrical+pdf+export PDF link annotation
    • http://istlan.space/63407655652sgpgg.pdfIn PDF document text
    • http://tugrull.com/783555829945dave.pdfIn PDF document text
    • http://fishland.store/how_to_manage_your_time_as_a_student_athleteduwxa.pdfIn PDF document text
    • https://xesupolapiban.weebly.com/uploads/1/3/4/5/134586318/11520823.pdfIn PDF document text
    • http://prod-fruit.space/download_android_adb_interface_driver_windows_108qcq5.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/74937397164.pdfIn PDF document text
    • https://naxulukituno.weebly.com/uploads/1/3/4/8/134879135/binidurajoren.pdfIn PDF document text
    • http://javaxirivibewi.mygamesonline.org/artikel_tentang_bahaya_narkoba.pdfIn PDF document text
    • http://lazakefezives.mygamesonline.org/90651414179.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/wovedukevikov/13248588320.pdfIn PDF document text
    • https://850a36a1-966c-46c3-86ed-e15bcb5778a7.filesusr.com/ugd/ede58b_87925a43075d4ababfedb04ddd3f005b.pdf?index=trueIn PDF document text
    • https://7c5e2310-e79b-429e-9f4a-70471a43dcce.filesusr.com/ugd/8ec1ef_61e218d047464f448d07033d515ddd77.pdf?index=trueIn PDF document text
    • https://f3b8d348-8566-49c9-a9f8-a2c3b9e1bc8e.filesusr.com/ugd/f1c748_1a5916bad2f54cb68bc8f3e7df1e9940.pdf?index=trueIn PDF document text
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_7607750dd54a4222bd3b70dc29b1b619.pdf?index=trueIn PDF document text
    • https://b40f07b9-a98f-42b6-a6e2-5dc2c82ebb0e.filesusr.com/ugd/e949ea_b3b9c60811134a3f8dac20f1234c7777.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dazemi/dokasozo.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/adapter_wifi_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/48911548018.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/google_spreadsheet_if_statement_multiple.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/tikogivid.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_off0000eedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDD 5028 bytes
SHA-256: 0895b13f239cd2f350de5466bffc44b585863d3a60f022321b4767f484339193
font_01_sfnt_off00010011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10011 11136 bytes
SHA-256: 85e612517976e62972636fce701a474cf000c171824b79a7d6b805768b704ef3

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