Malicious PDF — malware analysis report

Static analysis result for SHA-256 082f079d4c223668…

MALICIOUS

PDF

46.3 KB Created: 2020-08-19 00:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 578d7d8661429e49abc50948403cb5e5 SHA-1: b290ea9d105c36992c6057c2a9a207811f28400d SHA-256: 082f079d4c2236688df80a283fccfe76aa2e742c84a73db162dd994497eb0740
162 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=cancel+spotify+android+app', is flagged as a malicious redirector. The document body also contains urgency lures, suggesting an attempt to trick the user into clicking the malicious link. The presence of numerous other PDF links points to a link farm strategy, likely for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=cancel+spotify+android+app
    • http://files.goodcompanytutorials.org/uploads/1/3/2/7/132740763/fekat_datipi_tokowojewazomiv.pdf
    • http://files.ruthannsart.com/uploads/1/3/2/8/132816091/2988727.pdf
    • http://files.shelter-share.org/uploads/1/3/1/3/131383283/fc628b1b798.pdf
    • http://pivimupu.panamacitypassionplay.com/uploads/1/3/0/7/130739616/fanole-fexumebixis-jusozidosorazat.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/33134176498.pdf
    • https://cdn.shopify.com/s/files/1/0454/6310/9790/files/wafokokujilakofo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/5861998105.pdf
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/63003197580.pdf
    • https://cdn.shopify.com/s/files/1/0440/3019/7910/files/75222368245.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/52135678793.pdf
    • https://cdn.shopify.com/s/files/1/0437/9521/8594/files/how_to_gain_confidence_in_public_speaking.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/kaworodogobidex.pdf
    • https://cdn.shopify.com/s/files/1/0447/9811/6006/files/date_sheet_ignou_dec_2019.pdf
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/91678775629.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006850.bin
2f04db26994039f50df1f34e639070c6db345aa75bf10029966cde349b6f2349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6850 5060 bytes
font_01_sfnt_off0000799c.bin
3ef00b69805c14dcdac794472d8d0af8557a1a384df424ccb72e788276b141a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799C 10844 bytes
font_02_sfnt_off00009e9f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E9F 4324 bytes

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