Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb19b870329666f…

MALICIOUS

PDF

42.2 KB Created: 2020-03-08 10:41:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: 55d1f735500b560fb955c56044fc1493 SHA-1: 46af51d7a0f832d6c5782b86511e57e9b224a054 SHA-256: 3bb19b870329666fc01c444b0b09da2a914d0621242708eb898d9654a2155aff
176 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF document contains numerous embedded URLs and a heuristic firing for a link farm, suggesting it is designed to redirect users to malicious content. The document also explicitly instructs the user to disable security software and provides a password for an archive, indicating a social engineering attempt to bypass security measures and deliver a payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://www.policetrailer.com/uploads/1/3/0/2/130288751/130288751.html#adobe+xd+cc+setup+download PDF link annotation
    • http://merkabaonecollection.com/uploads/1/3/0/5/130550781/6062408.pdfIn PDF document text
    • http://cbacreditcard.com/uploads/1/3/0/3/130379231/bugafuro.pdfIn PDF document text
    • http://takodawills.co.uk/uploads/1/3/0/6/130621952/9533520.pdfIn PDF document text
    • http://www.diggerscompound.com/uploads/1/3/0/6/130603721/jasom-kopoxosudavozu.pdfIn PDF document text
    • http://60ss2.bpmtc.com/uploads/1/3/0/4/130475959/pojunisejam-mijakanikuf-vorosepuvu.pdfIn PDF document text
    • http://12kcustoms.com/uploads/1/3/0/2/130271232/kogenubat.pdfIn PDF document text
    • http://smallwonderskennel.com/uploads/1/3/0/4/130435682/naxebubugojuga-vifotifarupubi-nelukapivez.pdfIn PDF document text
    • http://kellyfitchett.net/uploads/1/3/0/3/130379193/dugubixobu-zizewid-pusuvudav.pdfIn PDF document text
    • http://mycounselingsa.com/uploads/1/3/0/7/130739476/furejevagonisewuwor.pdfIn PDF document text
    • http://www.juliarutty.co.uk/uploads/1/3/0/7/130738948/bezazumo.pdfIn PDF document text
    • http://www.soniavinograd.com/uploads/1/3/0/7/130739498/mazodukaromag.pdfIn PDF document text
    • http://inesindustries.org/uploads/1/3/0/7/130775742/2910458.pdfIn PDF document text
    • http://retroskoda.com/uploads/1/3/0/2/130289371/gabagome-rasug.pdfIn PDF document text
    • http://marmot-adventure.com/uploads/1/3/0/7/130738550/lebonoti.pdfIn PDF document text
    • http://www.letscijapan.com/uploads/1/3/0/6/130639861/1f679d69.pdfIn PDF document text
    • http://www.ddetweiler.com/uploads/1/3/0/6/130639763/0f5db1.pdfIn PDF document text
    • http://www.mvmt101.com.au/uploads/1/3/0/4/130435925/metuke.pdfIn PDF document text
    • http://burningbushshirts.com/uploads/1/3/0/2/130289345/2241168.pdfIn PDF document text
    • http://new-england-marketing.com/uploads/1/3/0/8/130815381/pisimigegajamapekonu.pdfIn PDF document text
    • http://optimisetimesolutions.com/uploads/1/3/0/5/130543665/3485793.pdfIn PDF document text
    • http://networkmarketingcanada.com/uploads/1/3/0/5/130539035/jifoniwe.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6B 8140 bytes
SHA-256: 69c6e8f1296421cf78f16fb59388bd8303422f39cb17ec67e8f44c4a68984987

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