Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e92de9372a7226…

MALICIOUS

PDF

50.1 KB Created: 2020-04-02 20:41:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: faca973c0118ffecade92ade8936a69a SHA-1: 5c9563074ed9dfc49d071b91f6f928ef49ec7aba SHA-256: d1e92de9372a7226f2ad961b6c9240b0d0175bac3418f38e35d82f7307d3c20c
94 Risk Score

Malware Insights

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

This PDF document is classified as malicious due to its extensive use of external links, a technique commonly employed for SEO link farming. The document body, though partially corrupted, contains text suggesting a lure related to a "metabolism diet plan pdf". The primary attack pattern involves redirecting users to a network of linked websites, likely to manipulate search engine rankings or distribute further malicious content. 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://leomasbooks.com/uploads/1/3/0/7/130738841/130738841.html#metabolism+diet+plan+pdf
    • http://karencenteno.org/uploads/1/3/0/3/130379651/gutokukejube.pdf
    • http://rollandbar.com/uploads/1/3/0/5/130544823/fd3ae024b65d9b9.pdf
    • http://brooktheater.com/uploads/1/3/0/6/130604251/pulozetu.pdf
    • http://flatlandtrailrunner.com/uploads/1/3/0/5/130589381/5565814.pdf
    • http://siouxfallsjujitsu.com/uploads/1/3/0/5/130551050/1c2658d4.pdf
    • http://scottpec.us/uploads/1/3/0/7/130739333/gakage.pdf
    • http://a1accommodations.org/uploads/1/3/0/3/130313178/cd97c613a81.pdf
    • http://karenalberti.com/uploads/1/3/0/4/130436136/39f4bd.pdf
    • http://elifaytekin.de/uploads/1/3/0/4/130488069/kilixixopem_manawamur_lenunutunijetab_sebepuvor.pdf
    • http://ilseonlinebusinesscoach.com/uploads/1/3/0/2/130291922/vujamivazawo.pdf
    • http://geras.sk/uploads/1/3/1/4/131438461/sutamoxa-lululoz-bexarovara-rulelox.pdf
    • http://defenderpoolservice.com/uploads/1/3/1/1/131163590/lovozoputol_jiwos.pdf
    • http://sidebysidesd.org/uploads/1/3/0/6/130604617/cc386651.pdf
    • http://jamesdesin.com/uploads/1/3/0/7/130775970/02e75779d24f21e.pdf
    • http://melissagatsonevents.com/uploads/1/3/0/7/130740561/f05de7a0eb168b.pdf
    • http://laboutiquerose.com/uploads/1/3/0/4/130489363/surakujoper.pdf
    • http://vtevap.com/uploads/1/3/0/6/130622075/webojiwirazuler_nujuguzeg_muxeritel.pdf
    • http://ns.wdchamber.com/uploads/1/3/0/6/130604933/7354793.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bcc.bin
c4c964e51508b6b8c77e0b643b072cc2653e570a97edcd4d24a595fc869d0bdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BCC 8228 bytes

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