Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0995e7a109f2d1f…

MALICIOUS

PDF

38.4 KB Created: 2020-03-30 05:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: d0fd893cf8ccddf6b162369f343a2580 SHA-1: f578e36456c573831183224d2c3ec8f265641b96 SHA-256: d0995e7a109f2d1f8e66d480a1de0c17742de1b542c2b3afbbf68593b0c86958
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains a URL that points to a collection of other PDF files, suggesting a link farm or distribution mechanism for 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://cfthomas.com/uploads/1/3/0/4/130489226/130489226.html#juegos+de+letras+para+ni%C3%B1os+4+a%C3%B1os PDF link annotation
    • http://millsupportzuid.com/uploads/1/3/0/6/130621983/0767f15e84.pdfIn PDF document text
    • http://harrellschristianacademy.org/uploads/1/3/1/0/131070301/pugof-satep-pemuvosokozovu.pdfIn PDF document text
    • http://ardorbrio23.net/uploads/1/3/0/4/130476237/sujajetavej-doloruwer-tujir.pdfIn PDF document text
    • http://clintmorris4layton.us/uploads/1/3/0/8/130874467/bopidotidi.pdfIn PDF document text
    • http://engimagination.com/uploads/1/3/0/7/130738837/vireg-gezubus-lerokepuzarus-xujapipokur.pdfIn PDF document text
    • http://beautylifeandmommyhood.com/uploads/1/3/0/9/130969216/zoxubop.pdfIn PDF document text
    • http://www.admlabz.com/uploads/1/3/0/3/130379354/metape-xesiv-nadupelol.pdfIn PDF document text
    • http://ronnierosevegas.com/uploads/1/3/0/7/130740517/sawod-manaw-topoziravi.pdfIn PDF document text
    • http://quick-rinse.com/uploads/1/3/0/5/130539046/5044038.pdfIn PDF document text
    • http://eastbranchknives.com/uploads/1/3/0/7/130776043/22ca567c3c9c90.pdfIn PDF document text
    • http://pantherlakenc.com/uploads/1/3/0/3/130324037/turedositiviwa-nezofe.pdfIn PDF document text
    • http://veteransignworks.com/uploads/1/3/0/5/130590334/d7c7e623b81.pdfIn PDF document text
    • http://thedecaturchordsmen.org/uploads/1/3/0/5/130588328/386197.pdfIn PDF document text
    • http://falkenbergadmissionsadvising.com/uploads/1/3/0/7/130739711/5601474.pdfIn PDF document text
    • http://4ugoodfood.com/uploads/1/3/0/7/130739699/0d65caf3437e2.pdfIn PDF document text
    • http://collegiatebenefitsalliance.com/uploads/1/3/0/6/130639837/wedosokow.pdfIn PDF document text
    • http://www.virginia-premium.com/uploads/1/3/1/4/131438517/1385797.pdfIn PDF document text
    • http://theacademyny.com/uploads/1/3/0/5/130588403/98e0cf757dc.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: folsombulldogfootball.com 3 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_off00006c06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C06 8288 bytes
SHA-256: 3c9811728793515a56d6094b3e24caa85c79eb8f5d4ef14ea53541f7c93f9605

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