Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5b17f25f66c762…

MALICIOUS

PDF

43.0 KB Created: 2020-05-15 19:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 137e9aecdb0c455244c6616cb2c6bfbb SHA-1: 9836f621bb842edd5c6c9e2694708b4698a4195f SHA-256: 2a5b17f25f66c76220d4063cc33a1a1c56ee622176a74710a61818c818865873
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a technique often used in SEO link farms to artificially inflate search engine rankings or distribute malicious content. The document body, though partially corrupted, suggests a lure related to a 'regret letter to supplier template', aligning with the 'SE_INVOICE_LURE' heuristic. The primary attack pattern involves directing users to external URLs, such as http://beaconmohs.com/uploads/1/3/0/5/130541688/130541688.html#regret+letter+to+supplier+template, which likely host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://beaconmohs.com/uploads/1/3/0/5/130541688/130541688.html#regret+letter+to+supplier+template PDF link annotation
    • http://forwardmomentumcoach.com/uploads/1/3/1/4/131453946/3998332.pdfIn PDF document text
    • http://ourdifferencesdetermine.com/uploads/1/3/1/8/131856636/3ee9fabca97ed7.pdfIn PDF document text
    • http://theshiregardens.com/uploads/1/3/0/7/130738841/98df78c57b.pdfIn PDF document text
    • http://thefrights.shop/uploads/1/3/0/2/130289409/suwelunafedi.pdfIn PDF document text
    • http://grangecounselling.com/uploads/1/3/0/5/130588625/rujekap.pdfIn PDF document text
    • http://therapistconsultant.com/uploads/1/3/0/5/130547112/wovexuwowapiza.pdfIn PDF document text
    • http://redspacestours.com/uploads/1/3/1/6/131636602/sifoxanofifatebid.pdfIn PDF document text
    • http://flowers-and-lace-wedding-planners.com/uploads/1/3/0/6/130639994/rinaxerun.pdfIn PDF document text
    • http://kingdomkidspsdc.com/uploads/1/3/1/4/131482999/d040f66c.pdfIn PDF document text
    • http://villapelagos.com/uploads/1/3/0/5/130590778/c5d4a0fbf1d.pdfIn PDF document text
    • http://fijamulder.com/uploads/1/3/0/9/130969406/maratilibajanap_dutusag.pdfIn PDF document text
    • http://hannahpedrick.com/uploads/1/3/0/2/130272909/d488473963fe.pdfIn PDF document text
    • http://robertkellyesq.com/uploads/1/3/0/7/130740073/guborumizejixiz-fomiripunine-rurowisivapojo.pdfIn PDF document text
    • http://roisinhealy.com/uploads/1/3/0/6/130604509/kufudenomawe.pdfIn PDF document text
    • http://usapplesupport.co/uploads/1/3/0/3/130323465/7cd3e73067.pdfIn PDF document text
    • http://mbs4life.com/uploads/1/3/0/2/130272880/susulaxizujinaj.pdfIn PDF document text
    • http://be-huetet.ch/uploads/1/3/0/8/130874671/lonaxumi.pdfIn PDF document text
    • http://parvise.com/uploads/1/3/1/4/131408029/nuvoviram.pdfIn PDF document text
    • http://cdiviaq.com/uploads/1/3/0/8/130814360/rewuwo.pdfIn PDF document text
    • http://rawlinson4delegate.org/uploads/1/3/0/9/130969247/774ce7b.pdfIn PDF document text
    • http://poshcashhub.com/uploads/1/3/0/4/130489909/samugoviverokim.pdfIn PDF document text
    • http://aero-scale.com/uploads/1/3/0/3/130324420/0dc98710991a96.pdfIn PDF document text
    • http://cecilyeiferle.com/uploads/1/3/0/9/130969172/zevipugifusolo.pdfIn PDF document text
    • http://gbp-avocates.ch/uploads/1/3/0/8/130814535/be63552008.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E48 9956 bytes
SHA-256: aefa44f5d4611aac2455f3b13d2dc29d09d718ec3adbe59351651458e2db034d

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