Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e68dccbd5922b6…

MALICIOUS

PDF

42.3 KB Created: 2020-03-11 03:28:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 9574664d5463924629c36b80e263f672 SHA-1: 8ed902b08ae803e337316c32a4d209c2583a1abd SHA-256: a3e68dccbd5922b6e177f48c7dc46102f0439b6d7338468359d65b847d290c58
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body text, though partially corrupted, contains a URL that mimics a 'pdf reader free download' lure. The primary heuristic identified a link farm of 22 external PDF links, suggesting a coordinated effort to distribute malicious content or phish for information. The embedded URLs are likely part of this redirection scheme.

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://adsl-63-204-18-48.benefitplans.org/uploads/1/3/0/4/130476940/130476940.html#pdf+reader+free+download+32+bit PDF link annotation
    • http://samloney.com/uploads/1/3/0/6/130639746/bdecefb660.pdfIn PDF document text
    • http://salcidos.com/uploads/1/3/0/7/130776040/jufubu.pdfIn PDF document text
    • http://osfcostumerentals.net/uploads/1/3/0/6/130604321/turizopobexasat.pdfIn PDF document text
    • http://equineperformanceservices.com/uploads/1/3/0/3/130313339/8553172.pdfIn PDF document text
    • http://waterheaterinsanfrancisco.com/uploads/1/3/0/7/130739032/6083085.pdfIn PDF document text
    • http://www.exploring-wilderness.com/uploads/1/3/0/5/130543761/7333605.pdfIn PDF document text
    • http://chicagonightlifepass.com/uploads/1/3/0/7/130739133/sorazuki_sutop_xuwiloweje.pdfIn PDF document text
    • http://engageandexperience.co.uk/uploads/1/3/0/6/130604304/pelenezogamigi.pdfIn PDF document text
    • http://newwebsite2017aug.com/uploads/1/3/0/7/130739369/pepojuzuwodadil.pdfIn PDF document text
    • http://www.sonicvibrationtherapy.com/uploads/1/3/0/5/130551694/nilawilegememijune.pdfIn PDF document text
    • http://www.syedmohsinakhtar.com/uploads/1/3/0/6/130621134/gopiwisilokaref.pdfIn PDF document text
    • http://docmike4roots.com/uploads/1/3/0/7/130740522/fuvojegiwogaso.pdfIn PDF document text
    • http://konceptdev.net/uploads/1/3/0/2/130289458/tojegurebovamixev.pdfIn PDF document text
    • http://www.themedicuscons.com/uploads/1/3/0/4/130483795/dogizegolefobe.pdfIn PDF document text
    • http://575creativecrafting.com/uploads/1/3/0/6/130639398/bipazonawer.pdfIn PDF document text
    • http://aarontolbert.com/uploads/1/3/0/6/130620874/vabigikixu-suvulofevutove.pdfIn PDF document text
    • http://www.hawaiibreastfeedinghelp.com/uploads/1/3/0/2/130274028/9190322.pdfIn PDF document text
    • http://alapilecolombia.com/uploads/1/3/0/5/130551729/xuvugejos_kuxisut.pdfIn PDF document text
    • http://agrbuildings.com/uploads/1/3/0/6/130620551/7756157.pdfIn PDF document text
    • http://datadynamo.org/uploads/1/3/0/6/130639786/berafi.pdfIn PDF document text
    • http://traind.me/uploads/1/3/0/5/130589049/babewigurafezozuv.pdfIn PDF document text
    • http://www.romaindhainaut.com/uploads/1/3/0/5/130590474/f771d7.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 3

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_off00007d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1A 8116 bytes
SHA-256: 24faf5d866921e1197dcc550733af218e0523a5df8b8c44f4a33344e07569de2

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