Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fadf62c9042ef0…

MALICIOUS

PDF

35.9 KB Created: 2020-05-18 12:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 732ce829fe94a2f0bb31e3371709551c SHA-1: 1bf7233a9f43c2ed093c4c6a1367930aa908f054 SHA-256: 26fadf62c9042ef0e66ba764f5d804e121dbc37c1a68f0fbb19b090384d8c891
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links to external PDF files hosted across numerous domains. This behavior is indicative of a link farm or SEO spam campaign, designed to drive traffic or distribute potentially malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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://liveyourdream.ru/uploads/1/3/1/4/131409474/131409474.html#weathering+and+erosion+worksheets+gr PDF link annotation
    • http://borkayjan.com/uploads/1/3/0/7/130776034/jepizevizatimudutur.pdfIn PDF document text
    • http://overthetopdesignsnh.com/uploads/1/3/0/5/130588267/b1840.pdfIn PDF document text
    • http://taylorleefit.net/uploads/1/3/1/4/131453041/3452160.pdfIn PDF document text
    • http://taraluccievino.com/uploads/1/3/0/2/130270873/fokudujemirakewidi.pdfIn PDF document text
    • http://nancymccloud.com/uploads/1/3/0/2/130289535/a65c6ea.pdfIn PDF document text
    • http://davidsparkesseafishing.com/uploads/1/3/1/4/131454683/3661030.pdfIn PDF document text
    • http://couplesws.com/uploads/1/3/0/7/130775704/f12ab57920571.pdfIn PDF document text
    • http://hrhfilms.com/uploads/1/3/0/7/130775510/rupububevuxuliz.pdfIn PDF document text
    • http://elizabethnjplumbers.com/uploads/1/3/0/5/130546432/wefari_jiwaxedunu.pdfIn PDF document text
    • http://homeautomationalarm.com/uploads/1/3/1/6/131606491/gasenudapometovu.pdfIn PDF document text
    • http://sybeca.com/uploads/1/3/0/6/130620309/1045796.pdfIn PDF document text
    • http://weddingflower.florist/uploads/1/3/0/4/130435962/xivipoxuxebuzezav.pdfIn PDF document text
    • http://legoformer.us/uploads/1/3/0/8/130813117/7632017.pdfIn PDF document text
    • http://blessthepeople.org/uploads/1/3/0/3/130323622/muregilifatujiwege.pdfIn PDF document text
    • http://malmorentalhouse.org/uploads/1/3/0/7/130776673/4273075.pdfIn PDF document text
    • http://fmg-goldau.ch/uploads/1/3/0/3/130313170/fofojafeda_pazikukedi_netegulidita_xonunuzo.pdfIn PDF document text
    • http://innovacionpublicitariamagenta.com/uploads/1/3/0/8/130814021/genezida-pafifomarajo-vevizuk.pdfIn PDF document text
    • http://studiomilanicavallini.com/uploads/1/3/1/8/131871535/wozemorobavi-xezusakizirizex-vawosasemobe.pdfIn PDF document text
    • http://violetbelleboutique.com/uploads/1/3/1/1/131164291/kixejavagu-jiforuzakozuf-zewarukilubedet-fitolekupa.pdfIn PDF document text
    • http://trancurabio.com/uploads/1/3/1/6/131607486/d06056bfccbd.pdfIn PDF document text
    • http://brownselectricalservices.com/uploads/1/3/0/2/130272976/0cf5303.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 6

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_off000061ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AB 10024 bytes
SHA-256: 201a07e6d05bc921728f9e28fc74bf552f00ab39a9102988778cbef77a7a9ab1

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