Malicious PDF — malware analysis report

Static analysis result for SHA-256 930aa1894a192be0…

MALICIOUS

PDF

42.9 KB Created: 2020-03-24 09:50:15 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 930056390cc0a4c430fa290fe07ab8a5 SHA-1: b9ac3edd0b18f2912dfd6cfa97c22a76df252e68 SHA-256: 930aa1894a192be0ed5df262b3cdc3af83d4f64628c4420606d3daa1503617fb
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 is largely unreadable, but the presence of numerous links to unrelated domains suggests a link farm or SEO manipulation tactic. The primary heuristic indicates a link to 'sfbaytherapist.com' which is also present in the document body. 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://sfbaytherapist.com/uploads/1/3/0/6/130639157/130639157.html#oster+countertop+oven+with+air+fryer+stainless+steel PDF link annotation
    • http://masteringjack.com/uploads/1/3/0/7/130740169/dujuk.pdfIn PDF document text
    • http://aatef.org/uploads/1/3/0/6/130605440/dorero.pdfIn PDF document text
    • http://mta-sts.mailserver.academiadeballetallegro.com/uploads/1/3/0/6/130640097/2692788.pdfIn PDF document text
    • http://romanticfrenchhome.com/uploads/1/3/0/7/130776433/wulok_viteruxovowodev.pdfIn PDF document text
    • http://moanalipopo.com/uploads/1/3/0/6/130621906/4965636.pdfIn PDF document text
    • http://cathedralparkurns.com/uploads/1/3/0/7/130739680/4376317.pdfIn PDF document text
    • http://bellabeautyspa.net/uploads/1/3/0/7/130776175/rogelu_sepakexuduw_vilafelapotiniv_pobegumosaboge.pdfIn PDF document text
    • http://melindaweathersby.com/uploads/1/3/0/6/130639418/fibolar_xamiwozufezur_voderoxi.pdfIn PDF document text
    • http://3rdcomercializadora.com/uploads/1/3/0/3/130379651/c37285f186.pdfIn PDF document text
    • http://professorsjrichards.com/uploads/1/3/0/5/130590355/f5c265706af8.pdfIn PDF document text
    • http://jacobmack.com/uploads/1/3/0/2/130272396/kewavid_lidurofituvafef.pdfIn PDF document text
    • http://www.average-adam.com/uploads/1/3/0/2/130289354/7598362.pdfIn PDF document text
    • http://leadersingreen.org/uploads/1/3/0/7/130776331/pemevasegopuze.pdfIn PDF document text
    • http://niakas.gr/uploads/1/3/0/7/130739867/fatepebafarapi-pipasusopesatuv-ridekikuru.pdfIn PDF document text
    • http://ninapouesi.com/uploads/1/3/0/6/130620511/186195.pdfIn PDF document text
    • http://radul.net/uploads/1/3/0/3/130379380/4651322.pdfIn PDF document text
    • http://doublekdorpersheepranch.com/uploads/1/3/0/5/130551176/xugumatisujilow_zojupepuvote_bojoxikowo.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
🗂 Part of campaign: melindaweathersby.com 4 samples

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_off0000732b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732B 8068 bytes
SHA-256: 4f64eadbfaced6d369c10c4b73130cf5109a76949300b7343005c5cfabb992cd
font_01_sfnt_off00009227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9227 2616 bytes
SHA-256: d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04

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