Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce6a29f998f89f2…

MALICIOUS

PDF

38.9 KB Created: 2020-04-01 14:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 179113b476dc2cd698cab353975bc29f SHA-1: 3578374385e14cc43fcab988a91a4530d516a525 SHA-256: dce6a29f998f89f2c6158c82e522f9cfa895389180f315b53b3433d0ea804239
104 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, many of which are numerically or generically named, suggesting a link farm designed to improve search engine rankings. The document body, though partially corrupted, contains text related to a 'national latin exam answer key' and a 'download button' lure, indicating a social engineering attempt to drive traffic to these external sites. The presence of numerous PDF links and the 'SEO LINK FARM' heuristic strongly suggest this document is part of a campaign to distribute malicious content or engage in SEO abuse.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://thesweetmission.com/uploads/1/3/1/4/131453650/131453650.html#national+latin+exam+2015+answer+key PDF link annotation
    • http://cookedwithhart.com/uploads/1/3/0/6/130620970/tamufanaz_ginik_pimomuw_xuxurevoloj.pdfIn PDF document text
    • http://buddhablossoms.com/uploads/1/3/0/6/130604538/dopesi-xodeten-tufubup-suwolusibeduso.pdfIn PDF document text
    • http://patterninginstinct.com/uploads/1/3/0/5/130551054/kezusibitibo.pdfIn PDF document text
    • http://soulfitt.com/uploads/1/3/0/7/130775682/911675.pdfIn PDF document text
    • http://jtjeepsales.com/uploads/1/3/0/9/130969511/xugadutolixad.pdfIn PDF document text
    • http://stephenwillsonarteducator.com/uploads/1/3/1/3/131380440/3923570.pdfIn PDF document text
    • http://pabloguarda.com/uploads/1/3/0/7/130776177/mukebuna.pdfIn PDF document text
    • http://gracetoukraine.net/uploads/1/3/0/9/130968988/wenogudumid_vokiwoki_nokamowonika_jivimatupuxas.pdfIn PDF document text
    • http://cupofjavaproductions.com/uploads/1/3/0/6/130639115/81da6550fe1b9.pdfIn PDF document text
    • http://fipny.com/uploads/1/3/0/2/130272070/1205685.pdfIn PDF document text
    • http://paynterwvhouse.com/uploads/1/3/0/7/130776312/3855123.pdfIn PDF document text
    • http://reebokpro.nl/uploads/1/3/0/7/130739153/9951485.pdfIn PDF document text
    • http://tintanegrahtx.com/uploads/1/3/0/2/130270897/532731.pdfIn PDF document text
    • http://laurienommsen-rivers.com/uploads/1/3/1/3/131384539/batosifodebe.pdfIn PDF document text
    • http://josegrandescoffee.com/uploads/1/3/0/2/130287211/bagulaw.pdfIn PDF document text
    • http://airportelectriccompany.com/uploads/1/3/0/2/130271244/nemojelivalej.pdfIn PDF document text
    • http://ktperspective.com/uploads/1/3/0/2/130291499/4532578.pdfIn PDF document text
    • http://jacobcapellupo.com/uploads/1/3/0/8/130813458/8680946.pdfIn PDF document text
    • http://ksarit.com/uploads/1/3/0/5/130539227/1482732.pdfIn PDF document text
    • http://dougmcelroy.com/uploads/1/3/0/9/130969742/0f5d743bc37.pdfIn PDF document text
    • http://olympiapaving.com/uploads/1/3/0/9/130969639/d655e54b66b3e.pdfIn PDF document text
    • http://egyuttegyeselyert.com/uploads/1/3/1/1/131164261/2671125.pdfIn PDF document text
    • http://lovelycosmeticsbylaci.com/uploads/1/3/0/6/130604548/2912940.pdfIn PDF document text
    • http://mod-conference.com/uploads/1/3/0/6/130605259/rimerunizoreke-xisadisexuros-nudog.pdfIn PDF document text
    • http://elevatedtechs.com/uploads/1/3/0/6/130639603/resimagire.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 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_off00006ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE2 7816 bytes
SHA-256: 9975e189dc3d5ed9d52f2038056dd7973f4e44f0ef04da773f4ec85c45ef6a5b

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