Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf99c06e6867249…

MALICIOUS

PDF

41.2 KB Created: 2020-03-27 03:03:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 704bc5e52ebe60cffacc2c96290a6f0d SHA-1: 09bab39c6421c30b53bec7a4b742845e6365d267 SHA-256: ecf99c06e6867249021d174ae9e27514c5c438ddc00f809dba3bca7b27d83184
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 external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text and a single visible URL, which is also part of the link farm. 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://markalanbabcock.com/uploads/1/3/0/7/130775118/130775118.html#native+american+sweat+lodge+near+me PDF link annotation
    • http://ladavisbooks.com/uploads/1/3/0/5/130539097/widiwalezop.pdfIn PDF document text
    • http://jimlonergan.net/uploads/1/3/0/3/130323630/guladamidika.pdfIn PDF document text
    • http://jeeltransformandoproyectos.com/uploads/1/3/0/7/130740265/vefimuruwuvogus-lurofomikerer-deletu-wokipuvinutasaj.pdfIn PDF document text
    • http://naturalbalancetherapies.org/uploads/1/3/0/4/130436007/ritudubarom.pdfIn PDF document text
    • http://creativeranddconstruction.com/uploads/1/3/0/6/130621362/8d081.pdfIn PDF document text
    • http://thepscfoundation.org/uploads/1/3/0/4/130476458/cc4d06a3.pdfIn PDF document text
    • http://loving-your-pets.com/uploads/1/3/0/8/130814225/6877211.pdfIn PDF document text
    • http://camacamp.org/uploads/1/3/0/7/130738841/bovuwuxoxonuvotas.pdfIn PDF document text
    • http://pdxeventsource.com/uploads/1/3/0/3/130312986/venakeloxote_xiresovi.pdfIn PDF document text
    • http://doulalabirthservices.com/uploads/1/3/0/7/130776408/juliwurene-gerogurovezem-bedugusak.pdfIn PDF document text
    • http://tvessencemelts.com/uploads/1/3/0/3/130379132/5515921.pdfIn PDF document text
    • http://cmfindlay.org/uploads/1/3/0/4/130483582/9361810.pdfIn PDF document text
    • http://26971.atkhn.com/uploads/1/3/0/5/130588597/7745837.pdfIn PDF document text
    • http://mkrishnan.org/uploads/1/3/0/7/130775137/2b3ec7a56.pdfIn PDF document text
    • http://essentialwellnesswithkelly.com/uploads/1/3/0/5/130590467/c9468eecd8fec.pdfIn PDF document text
    • http://pairable.net/uploads/1/3/0/4/130483739/tulor.pdfIn PDF document text
    • http://northmeats.com/uploads/1/3/0/6/130604299/2cd61c8b76.pdfIn PDF document text
    • http://abilityrehabservices.com/uploads/1/3/0/6/130620694/peferinumobowimuga.pdfIn PDF document text
    • http://bakktchain.com/uploads/1/3/0/5/130551366/xufepefemob-rabexixo.pdfIn PDF document text
    • http://stemimpactawards.com/uploads/1/3/0/6/130621052/9bf0531e198.pdfIn PDF document text
    • http://aquaponicsoutlet.com/uploads/1/3/0/4/130435680/5855f2451.pdfIn PDF document text
    • http://artdepartment.site/uploads/1/3/0/4/130483741/4c69bbe6623.pdfIn PDF document text
    • http://blueoceansolutionsme.com/uploads/1/3/0/4/130488934/lotapixa-wewej.pdfIn PDF document text
    • http://yummyblair.com/uploads/1/3/0/2/130287456/paketubelimarol_kebax_bokimuz.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 4

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_off00007880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7880 7384 bytes
SHA-256: 3a2221eee1983093e80c17880ec4c9e46d3b4c80d5390492f21cfa7f8ece4588

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