Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f0dc5afee91705…

MALICIOUS

PDF

37.2 KB Created: 2020-07-11 07:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c0f6cbe3be871f1b2282af89206e27e SHA-1: 1d1f02ef467f28903dbf953360f45bdda9f274fd SHA-256: 03f0dc5afee917057e72e9a559b9ddd030459bfa2ab639d9ed9966a3f942599c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified as a link farm, that redirect to malicious websites. The primary link, 'https://ttraff.com/pify?keyword=makalah+ateisme+pdf', is a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to potentially harmful content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.com/pify?keyword=makalah+ateisme+pdf
    • http://files.priorityenvironmental.ca/uploads/1/3/2/7/132740415/poturowinu-pepurefeme-zomoxiru.pdf
    • http://files.divajaya.com/uploads/1/3/2/6/132681757/10bbeae.pdf
    • http://files.jaxntheboxtattoos.com/uploads/1/3/2/7/132710762/denifuvowujedun-mosofexolalojut-jedamulimuwu-wadorixade.pdf
    • http://files.chocolate5krun.com/uploads/1/3/2/3/132303374/8967722.pdf
    • http://files.bingocompany.net/uploads/1/3/1/3/131379612/d2857f2095895b.pdf
    • http://files.legacyhorselogging.com/uploads/1/3/1/6/131636990/rakofidi-tuxujojaxeki.pdf
    • http://files.tracygardnerbeno.com/uploads/1/3/2/3/132302810/0fd09a.pdf
    • http://files.demandinggenealogist.com/uploads/1/3/2/6/132681855/3df4087.pdf
    • http://files.mtzionucc.org/uploads/1/3/0/7/130740533/tapopolazasagor-zexakuraj-levezukuweli-kafivenup.pdf
    • http://files.wlcbands.com/uploads/1/3/1/6/131607712/2769e0d94.pdf
    • http://files.mikemcmahanlpc.com/uploads/1/3/0/9/130969926/ad755595ea.pdf
    • http://files.chaosincoos.com/uploads/1/3/2/6/132695994/zikovozuxafuje_xugajumek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://zawaxus.files.wordpress.com/2020/07/davomanikifiveximerabix.pdf
    • https://fogamadamin.files.wordpress.com/2020/06/7093694718.pdf
    • https://nelagudisuz.files.wordpress.com/2020/07/bomuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/midotikonujeriruzopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18396470220.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ropuxikasafomudixaxo.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000545f.bin
89473836c7ec2501142fe3d1dc1a2c4a0295aa6ce39b7fd93bb4c6540ab2d1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x545F 4824 bytes
font_01_sfnt_off000064c9.bin
4f1bf0a4bf541cfc3ec3d8ba97f01c6db812d1227a6b0507bfbf776a39b13399		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C9 10684 bytes

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