Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9cc96f1d98777e5…

MALICIOUS

PDF

76.5 KB Created: 2021-04-04 10:25:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 38247ea651eb6804a3d6d31e15865146 SHA-1: 89077f816a62ba374d40fc3927546482a1723fcf SHA-256: f9cc96f1d98777e5799c517631cf8c04db42369c1730cf2580019cdb0dd30590
164 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. It uses an urgency-based lure. 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 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/wix?keyword=daughtry+tour+2020+setlist PDF link annotation
    • http://smartroom.pro/tulawunaxipoxokuva81s4w.pdfIn PDF document text
    • http://inglassrus.ru/40388230235mohff.pdfIn PDF document text
    • https://voteweze.weebly.com/uploads/1/3/5/3/135346586/368086.pdfIn PDF document text
    • https://pudijamarotu.weebly.com/uploads/1/3/4/0/134000536/d777b.pdfIn PDF document text
    • https://dakubotamijez.weebly.com/uploads/1/3/2/7/132712147/b24496.pdfIn PDF document text
    • https://gefetejumifigo.weebly.com/uploads/1/3/4/6/134688955/6500482.pdfIn PDF document text
    • http://card2card.live/motorola_sb6121_instructions2mquy.pdfIn PDF document text
    • http://shoop-fk.ru/semicolons_lesson_year_5zwocf.pdfIn PDF document text
    • https://tonuvufew.weebly.com/uploads/1/3/1/4/131438708/kinivetofaxu_fuzolezotitur_bagomaw_sakerifoguj.pdfIn PDF document text
    • https://xisidugaboker.weebly.com/uploads/1/3/4/4/134436298/1497385.pdfIn PDF document text
    • http://qwonder.space/19175606990ls6jf.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/xomudufe/physical_science_grade_10_chemistry.pdfIn PDF document text
    • https://c7ecfb45-4de9-4174-91ae-4a3416e09b0d.filesusr.com/ugd/fc4f66_8e376706ca3d4eb3bff6bca0883741e3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/dividing_fractions_examples_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/tangledeep_pet_guide.pdfIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_83dae0b1aea44f51863c87b6517bd428.pdf?index=trueIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_64178b288c904840b31cbfddcd55adbe.pdf?index=trueIn PDF document text
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_65b824f07eb94ecf87c4edf2929a81c3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/scratch_2_ping_pong_tutorial.pdfIn PDF document text
    • https://c4a5d104-04f9-44e6-b03f-1f5edac3680f.filesusr.com/ugd/f23921_6f3f752586b842a18d4755c311f98232.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/52064533336.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/65181501479.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_off0000eb48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB48 5320 bytes
SHA-256: b14a4d977dc2146bfa0f3b1b4b4380871b4992c671bb84e4cd3fdb5ad3a99b1f
font_01_sfnt_off0000fd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD66 11564 bytes
SHA-256: 7a64d04e6ac46a5522e791937a801ebfc7b5cf9b6999e4680355a8f261b6f54c

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