Malicious PDF — malware analysis report

Static analysis result for SHA-256 82de0fd7e2f4677c…

MALICIOUS

PDF

33.5 KB Created: 2020-03-29 06:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: b6c20dc0605075ffa16487d0383507cd SHA-1: a27f670de4d0150b52cfed5259da38f7b5a71b25 SHA-256: 82de0fd7e2f4677c547fd35d9b3216e0742bb7f0aa7ea225f77cdb25b3719df9
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 URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various domains, suggesting a link farm or SEO spam campaign. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://chewoncakes.com/uploads/1/3/0/6/130604650/130604650.html#homemade+woodworking+tools+pdf PDF link annotation
    • http://mylittletruffles.com/uploads/1/3/0/5/130588221/fff535891b6eb0.pdfIn PDF document text
    • http://projetiqs.com/uploads/1/3/0/7/130739286/2048842.pdfIn PDF document text
    • http://mta-sts.mx.gospeltrumpet.net/uploads/1/3/0/2/130289235/6d3c7b3bd.pdfIn PDF document text
    • http://advancerehabservices.com/uploads/1/3/0/2/130287878/tojiwu.pdfIn PDF document text
    • http://hidingspace.online/uploads/1/3/0/6/130620624/ede87c96ecd.pdfIn PDF document text
    • http://peerinteractivestudy.com/uploads/1/3/0/7/130775268/8261553.pdfIn PDF document text
    • http://www.padremutestmenu.com/uploads/1/3/0/6/130640042/wutupikakomalawer.pdfIn PDF document text
    • http://plaqueprofessionals.com/uploads/1/3/0/8/130814421/2e9ed8a17ef19.pdfIn PDF document text
    • http://unitedcraftgrowers.com/uploads/1/3/0/2/130287513/7302520.pdfIn PDF document text
    • http://www.uniricambi.net/uploads/1/3/0/4/130435862/rupoxo_piveganarigafu.pdfIn PDF document text
    • http://ideacreativemarketingdemo.com/uploads/1/3/1/0/131070888/919227.pdfIn PDF document text
    • http://artfullnessbymarlene.com/uploads/1/3/0/4/130483801/6977630.pdfIn PDF document text
    • http://hennebrymath.com/uploads/1/3/0/6/130621076/2785521.pdfIn PDF document text
    • http://nikonicreagan.com/uploads/1/3/0/7/130774969/ae73b7428f2506e.pdfIn PDF document text
    • http://yourcustomspace.com/uploads/1/3/0/4/130494389/90df2c.pdfIn PDF document text
    • http://boxedandpotted.com/uploads/1/3/0/7/130739363/1ac5366393a71.pdfIn PDF document text
    • http://bodywise.yoga/uploads/1/3/0/8/130814232/2744800.pdfIn PDF document text
    • http://nakomagraeagle.com/uploads/1/3/0/5/130539059/sovekaluv.pdfIn PDF document text
    • http://markleroyjackson.com/uploads/1/3/0/7/130738641/zujifusexaxaj.pdfIn PDF document text
    • http://isnlp.net/uploads/1/3/0/7/130739530/868017.pdfIn PDF document text
    • http://homesbycoronado.com/uploads/1/3/0/7/130775515/dafeda.pdfIn PDF document text
    • http://cottonlanebakery.com/uploads/1/3/0/2/130288642/jazijogomafaj.pdfIn PDF document text
    • http://mysticgardentw.com/uploads/1/3/0/5/130550944/kidizili.pdfIn PDF document text
    • http://sealosophy.com/uploads/1/3/0/9/130969759/rujukimitivavu.pdfIn PDF document text
    • http://bunniesareus.com/uploads/1/3/0/8/130814286/70d45036.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
🗂 Part of campaign: mysticgardentw.com 3 samples

Related samples 2

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_off00005dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFA 6508 bytes
SHA-256: 75fe41e44e8318c5f3a8733dfeef8b203438355c02aa2c59a5a6c79dca5ae588

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