Malicious PDF — malware analysis report

Static analysis result for SHA-256 005d7316346f3ed4…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 02:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b21a890cf9fd21e4663f681343fda70b SHA-1: c6366669ea93eaf6267b8cc47757c6f449600f16 SHA-256: 005d7316346f3ed4de4bbc0c368e9f0b77b42dee15b5541a05cc2b28bd9b2fd0
154 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector service, ttraff.com, which is likely used to obscure the final malicious destination. Another heuristic indicates a large number of external PDF links, suggesting a link farm or SEO poisoning tactic to attract victims.

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=online+movie+ticket+booking+system+project+in+html+pdf
    • http://files.gfox-insurance-agency.com/uploads/1/3/2/8/132815206/gojuwewajogenev_domuke_toveg_tipunen.pdf
    • http://files.hethersgillvintageclub.co.uk/uploads/1/3/0/7/130775245/jenolitupebabor.pdf
    • http://files.katiebtemple.com/uploads/1/3/1/6/131636655/5586503.pdf
    • http://kabid.storyscouts.org/uploads/1/3/2/8/132816066/puxagovogug-jajebisamu-xemimij-zefupajabi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/mafurufujulibos.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/datenara.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/45316567130.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/cooling_tower_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7733/files/61397577941.pdf
    • https://cdn.shopify.com/s/files/1/0437/4419/8805/files/43737040149.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/magonomaluzew.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/6214274828.pdf
    • https://cdn.shopify.com/s/files/1/0433/4426/5366/files/snapchat_hack_v2._1.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1453/files/ken_park_movie_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/andhra_bank_home_loan_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/critical_capabilities_for_business_intelligence_and_analytics_platforms.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/girisun.pdf
    • https://cdn.shopify.com/s/files/1/0428/6388/6495/files/tuxelikej.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_off000064a1.bin
72c55cd71301781c0f6a1e1559974bc1538ae921ee7903860bda9dc843f16ecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A1 5828 bytes
font_01_sfnt_off00007865.bin
1b1ffaccbaf99f15cb2cc554d0601ce6b018d11112c821252254768dc26b1d72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7865 10024 bytes

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