Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f1eeff809bba75c…

MALICIOUS

PDF

48.5 KB Created: 2020-05-04 14:28:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9ce4fce9641b5d98c0c8588f97202b3b SHA-1: d7c82c32faddc0ea701b9e3fc17225f2b4bd40a5 SHA-256: 5f1eeff809bba75c4088d216ecc841520a236996e1bcba174bf69391078f12ca
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body mentions 'Candy crush soda hack game apk', suggesting a lure to trick users into downloading potentially malicious content. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of harmful intent.

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://katiaponomareva.com/uploads/1/3/1/4/131454396/131454396.html#candy+crush+soda+hack+game+apk
    • http://runa-ua.com/uploads/1/3/0/7/130739537/6482066.pdf
    • http://quirkycreations.shop/uploads/1/3/0/5/130552073/7810411.pdf
    • http://corrinahoneycutt.com/uploads/1/3/0/2/130287548/wadutila.pdf
    • http://isle2moons.com/uploads/1/3/0/4/130488442/vusubi.pdf
    • http://giftland-store-llc.com/uploads/1/3/0/2/130291971/3008358.pdf
    • http://bruce-lee-roy.com/uploads/1/3/0/6/130620929/pisusof.pdf
    • http://austinpettinger.com/uploads/1/3/0/9/130968931/be82d.pdf
    • http://boozybakerygames.com/uploads/1/3/0/2/130289503/f899ae.pdf
    • http://thealphabook.org/uploads/1/3/0/6/130620924/f8f2a63.pdf
    • http://zhangxiaoyan.info/uploads/1/3/0/2/130289466/mosixubebenajumabi.pdf
    • http://sacyapi.com/uploads/1/3/0/4/130483565/77bb9d03d.pdf
    • http://redtruffleco.com/uploads/1/3/0/3/130313286/1568338.pdf
    • http://nancykolbe.com/uploads/1/3/0/6/130603896/kopibax.pdf
    • http://sentinelfirstaidtraining.com/uploads/1/3/1/1/131163772/pegimogaxokisoso.pdf
    • http://rebiofficial.com/uploads/1/3/0/2/130289294/xuxegevorizaranok.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000092a1.bin
63b52f56824889751997c2a8d135d5192f6c8b0bad637ceb009f0989342b28c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92A1 10744 bytes

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