Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92a5b8f033a7df9…

MALICIOUS

PDF

45.4 KB Created: 2020-03-21 18:56:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c8d2414d01aa0cb70e470f407a2882ba SHA-1: 11f3727c13df795a90359d8847df625d67853e64 SHA-256: c92a5b8f033a7df98bc0ddb8520dfd9504515662766b26068bbb6ede2b9b8336
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains references to these external URLs. The primary function appears to be directing users to a vast network of other PDF documents hosted across numerous domains, suggesting a link farm or a distribution mechanism for potentially 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://hiddentrailsworldwide.com/uploads/1/3/0/5/130544823/130544823.html#regiones+que+conforman+el+relieve+venezolano
    • http://teamlegacylifestyles.info/uploads/1/3/0/6/130605472/c689fca0.pdf
    • http://www.laurenwaglerphotography.com/uploads/1/3/0/6/130639311/tozow-mowowuxe.pdf
    • http://dansalcumbe.com/uploads/1/3/0/2/130272452/0c19176.pdf
    • http://townapparel.shop/uploads/1/3/0/7/130775252/3a863d51db69d.pdf
    • http://circusbacchus.org/uploads/1/3/0/6/130604604/5839942efe.pdf
    • http://oceannotions.com/uploads/1/3/0/4/130489039/gilosikaweliw.pdf
    • http://saishakticenter.com/uploads/1/3/0/5/130589435/lufuxoxewifarelumuvo.pdf
    • http://mundotainos.com/uploads/1/3/0/5/130588396/bineze_vuxixaw_gujelumexivoxa_lupitedux.pdf
    • http://jamesgilley.net/uploads/1/3/0/7/130775447/sajelitob-logox-dogipuwu.pdf
    • http://unxpectedxpeditions.com/uploads/1/3/0/6/130603690/webuveduk_tavesusa_roneruku_diwosewe.pdf
    • http://jsuatlcollective.com/uploads/1/3/1/1/131164180/libamilab.pdf
    • http://corinnebradleymsn.com/uploads/1/3/0/4/130476885/84d17dcd.pdf
    • http://annaslavicgallery.com/uploads/1/3/0/4/130483447/zabitoji.pdf
    • http://nancyandersonmarketing.com/uploads/1/3/0/8/130814290/fe193a6.pdf
    • http://relst-uhag66.com/uploads/1/3/0/7/130775346/pelemuku-popokelitor-goxujizojakelu.pdf
    • http://reparaton.net/uploads/1/3/0/6/130621786/084b22195dc93.pdf
    • http://globeaccents.com/uploads/1/3/0/6/130621839/vikemujebamajan-mazisuruxamoj-fixiwenenazo-vizere.pdf
    • http://designerbug.net/uploads/1/3/0/7/130739713/pejegijope_pozolovuruvi_gones.pdf
    • http://okkcheers.com/uploads/1/3/1/0/131070116/6466992.pdf
    • http://carllarosa.com/uploads/1/3/0/5/130544385/rufuzumenenetukuk.pdf
    • http://blogalytix.com/uploads/1/3/0/4/130476429/zakidunewex_retitonunewaxa_gisasunaze.pdf
    • http://oakhillcontractorsllc.net/uploads/1/3/0/6/130620788/folulurefomume-xogor-mivune-bisakiraxaxopej.pdf
    • http://maryneimanphotography.com/uploads/1/3/0/5/130589400/julobadigem.pdf
    • http://oakhillcontractorsllc.net/uploads/1/3/0/6/130620788/folulurefomu
    • 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_off00008737.bin
1d57fed2347f94d1aba5a64f4c77551ef6d2fa0502e5a7017720f2c7823c6d65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8737 8524 bytes

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