Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ac4b864e88a84a…

MALICIOUS

PDF

43.8 KB Created: 2020-03-26 11:48:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: d222ba6b06aaf30861a8fcc4d6b6d56f SHA-1: 88487dd6312a7490b50727e1955477fe1e33e987 SHA-256: f5ac4b864e88a84ad470ef66543706e7c910fea92e35177c49453a720a32ea1e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL found in the document body, http://undeadcameras.com/uploads/1/3/0/4/130476348/130476348.html#angulos+del+triangulo+isosceles, is part of this link farm. The ML classifier also strongly indicated maliciousness. The document's purpose appears to be directing users to a network of websites, likely for SEO spam or to host 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://undeadcameras.com/uploads/1/3/0/4/130476348/130476348.html#angulos+del+triangulo+isosceles PDF link annotation
    • http://magicalcryptofriends.org/uploads/1/3/0/4/130435561/zegizi_ruvisumusaveted_betewakuzi.pdfIn PDF document text
    • http://www.erinsauer.com/uploads/1/3/0/8/130813866/a690c.pdfIn PDF document text
    • http://www.resteaz.com/uploads/1/3/0/6/130621153/kexef.pdfIn PDF document text
    • http://1tailgate.com/uploads/1/3/0/2/130289409/2c47201.pdfIn PDF document text
    • http://usdaum.global/uploads/1/3/0/5/130550995/6476182.pdfIn PDF document text
    • http://fancibaking.com/uploads/1/3/0/7/130738830/3757242.pdfIn PDF document text
    • http://niamhmoore.net/uploads/1/3/0/4/130483385/779a4.pdfIn PDF document text
    • http://campingdeberghoeve.com/uploads/1/3/0/6/130620272/gewujuzipeluf.pdfIn PDF document text
    • http://randallwakefield.com/uploads/1/3/0/2/130289380/jaleza-kowosujikitas.pdfIn PDF document text
    • http://bosstreatsforher.com/uploads/1/3/0/9/130969663/riperukun_negaloj.pdfIn PDF document text
    • http://mhsbooster.bluewireweb.com/uploads/1/3/0/2/130287960/734379.pdfIn PDF document text
    • http://accesscampdc.com/uploads/1/3/0/4/130488273/4e2fe5ad281edb.pdfIn PDF document text
    • http://goodmorninghomes.ca/uploads/1/3/0/5/130540928/3257368.pdfIn PDF document text
    • http://jinuj.com/uploads/1/3/0/2/130289271/3664048.pdfIn PDF document text
    • http://developertony.com/uploads/1/3/0/6/130620283/luxasuzotuzivin.pdfIn PDF document text
    • http://myfitathome.com/uploads/1/3/0/7/130776749/naluduke.pdfIn PDF document text
    • http://wastewaterexpert.net/uploads/1/3/0/8/130813714/kupetafefadinut.pdfIn PDF document text
    • http://annjarvie.com/uploads/1/3/0/6/130639456/8117312.pdfIn PDF document text
    • http://www.professionalsconsortium.com/uploads/1/3/0/9/130969037/2898805.pdfIn PDF document text
    • http://bricknjhealthinsurance.com/uploads/1/3/0/7/130775920/51f76.pdfIn PDF document text
    • http://webmail.directional-ambition.com/uploads/1/3/0/2/130291694/nujopelorijixe-reliziguj-fuzite-gusojotamele.pdfIn PDF document text
    • http://beaniesshoerepair.com/uploads/1/3/0/4/130435956/fazesifolik.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 5

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_off000073b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B8 9256 bytes
SHA-256: 9d804ef65851efa1e97358c4d1dea3ac915020cc87d92bc42a836b88b7b8014a
font_01_sfnt_off00009507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9507 2944 bytes
SHA-256: 0fff8637fe4384a78c319bbc38c9924ea46f85d2542dee181d8687891991a99e

Open this report in the interactive analyzer, or submit your own file for analysis.