Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1e7e7a4e76f9b5…

MALICIOUS

PDF

39.9 KB Created: 2020-03-29 09:11:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 4e4ebbe5fe3162dcb3d949674dc05547 SHA-1: 75f9ee12b70a19edcfc4554b425cf42d83b75393 SHA-256: ef1e7e7a4e76f9b5d1163029639b48660be42fb9aa613034053b7d13eb81155c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, a common tactic for SEO link farms and potentially for distributing malicious content. The document body mentions "89 dollars in word form" and links to external URLs, suggesting a lure for financial scams or phishing. No scripts were extracted, limiting the analysis of direct malicious actions within the file itself. The primary threat appears to be redirection to potentially malicious external sites.

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://moodlabnewlife.nl/uploads/1/3/0/2/130287419/130287419.html#89+dollars+in+word+form PDF link annotation
    • http://view15.com/uploads/1/3/0/4/130435785/80bb42434b481be.pdfIn PDF document text
    • http://man-kind.com/uploads/1/3/0/4/130476572/xonezavevadufulivib.pdfIn PDF document text
    • http://miamfoundation.com/uploads/1/3/0/5/130588796/857421.pdfIn PDF document text
    • http://premiumpunters.com.au/uploads/1/3/0/6/130621643/92f8411c02c.pdfIn PDF document text
    • http://videoministry.stjohnsayville.org/uploads/1/3/0/6/130604333/b8e57ff0e.pdfIn PDF document text
    • http://thatsustainsme.com/uploads/1/3/0/3/130313212/dobifaxevus_dugomide_virevutebofuxo_ferezewi.pdfIn PDF document text
    • http://ryotkid.com/uploads/1/3/0/6/130604486/ridomafa_tokakaludub_xixiwos.pdfIn PDF document text
    • http://questinternationalstudentservices.com/uploads/1/3/0/5/130543462/ecf995.pdfIn PDF document text
    • http://millennialbarbers.com/uploads/1/3/0/6/130620863/jaliki.pdfIn PDF document text
    • http://weedbuzz420.com/uploads/1/3/1/1/131163684/6389493.pdfIn PDF document text
    • http://techinfoplusideas.com/uploads/1/3/0/2/130288399/toromomarusani.pdfIn PDF document text
    • http://nicolien.senekal.biz/uploads/1/3/0/7/130738754/zuzanubovegu.pdfIn PDF document text
    • http://2001silveradoz71.com/uploads/1/3/0/5/130541065/bbc81.pdfIn PDF document text
    • http://mediaportfolio.online/uploads/1/3/0/8/130873787/3479eeee1d5c.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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn 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_off000069b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B2 8288 bytes
SHA-256: bfde4f89ffa38a6585f62d3e4c2eb7cf50634fd5673906558095d808e1446026
font_01_sfnt_off00008926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8926 2652 bytes
SHA-256: 1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838

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