Malicious PDF — malware analysis report

Static analysis result for SHA-256 e077f671f1ce520d…

MALICIOUS

PDF

44.9 KB Created: 2020-03-21 20:19:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 62485689c1e3ecca444070895209204d SHA-1: 1754c8af99c58e7dea8426bc9dbe36bac857e690 SHA-256: e077f671f1ce520db102afd0f24a908bee481c7d987856876982256c14105de2
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially obfuscated, includes the phrase 'Estimulacion temprana 3-6 meses' and references wkhtmltopdf, suggesting a lure related to early childhood development. The primary attack pattern involves directing users to a vast array of external PDF files hosted on numerous domains, likely for SEO spam or to distribute further malicious content.

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://directorsofficersliabilityinsurance.wales/uploads/1/3/0/8/130874299/130874299.html#estimulacion+temprana+3-6+meses PDF link annotation
    • http://acilocator.com/uploads/1/3/0/5/130540083/babojofemosixag.pdfIn PDF document text
    • http://kittycatmafia.com/uploads/1/3/0/7/130775570/fujijerosavev-goguzif.pdfIn PDF document text
    • http://psintra.com/uploads/1/3/0/6/130639994/9839712.pdfIn PDF document text
    • http://afcsnell.org/uploads/1/3/0/5/130589413/cde125f.pdfIn PDF document text
    • http://www.gmcroofingne.co.uk/uploads/1/3/0/6/130620601/6340415.pdfIn PDF document text
    • http://nwapetgrooming.com/uploads/1/3/0/6/130620491/xifewo.pdfIn PDF document text
    • http://tonicbagsshoes.com/uploads/1/3/0/6/130620942/luzel_panafiw_xezejozawukun.pdfIn PDF document text
    • http://spollaine.com/uploads/1/3/0/6/130620248/fikukajisunofikoraj.pdfIn PDF document text
    • http://travistraffictickets.com/uploads/1/3/0/2/130270994/831490fee3993d.pdfIn PDF document text
    • http://www.danalewisdestinationweddings.com/uploads/1/3/0/2/130289185/9381828.pdfIn PDF document text
    • http://spraytansbymichelle.biz/uploads/1/3/0/2/130270812/busufud_lodikejogop_xakibekuxilu_rexabe.pdfIn PDF document text
    • http://wcafethailand.com/uploads/1/3/0/3/130313105/wamixa.pdfIn PDF document text
    • http://autotriage.com/uploads/1/3/0/7/130739264/loxasobozedaxa.pdfIn PDF document text
    • http://nicoleshumate.com/uploads/1/3/0/7/130776599/nuxido_mixufomaw_vijubip.pdfIn PDF document text
    • http://swanmartialarts.com/uploads/1/3/0/7/130776728/wubanokaxakowenij.pdfIn PDF document text
    • http://noggum.info/uploads/1/3/1/1/131163857/remepubi.pdfIn PDF document text
    • http://www.dormiveglia.org/uploads/1/3/0/3/130379435/ef6a0d5.pdfIn PDF document text
    • http://mostro.me/uploads/1/3/0/5/130539129/2334d577494fd64.pdfIn PDF document text
    • http://carloariani.com/uploads/1/3/0/8/130814195/pimewev.pdfIn PDF document text
    • http://nashvilleperformancepsych.net/uploads/1/3/0/7/130738591/1477224.pdfIn PDF document text
    • http://foreverlawngeorgia.com/uploads/1/3/0/5/130541656/nibov_wepiwedabalodu_lesemuvafigov_jileru.pdfIn PDF document text
    • http://insuremydreams.com/uploads/1/3/0/4/130483794/fajawoja.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: dmcappraisals.com 4 samples

Related samples 1

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_off0000822e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822E 9600 bytes
SHA-256: afdec940d4116b507518228ed8376e44323bc187f427e40fc10fb3df841f4c02

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