Malicious PDF — malware analysis report

Static analysis result for SHA-256 07930e617c27df93…

MALICIOUS

PDF

43.8 KB Created: 2020-08-07 18:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0785376d09fcc12eeffb4db76bddeec8 SHA-1: a91153de0a1c0dcc678c49a356954e6a57e8b753 SHA-256: 07930e617c27df9312f9525c038861348797cbc1a824759c05731e516180f039
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=care+credit+application+pdf+2020', is identified as a malicious redirector. The document body and heuristics suggest a callback phishing or tech-support scam pretext, aiming to trick users into clicking the malicious link. The presence of numerous external PDF links also indicates a link farm, likely for SEO manipulation or to host further 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.ru/pify?keyword=care+credit+application+pdf+2020
    • http://files.billkliss.com/uploads/1/3/1/3/131380814/jawota_gamalasonixosaj_tulimajowikasi_boduzirivosopan.pdf
    • http://files.easyindonesian.com/uploads/1/3/0/7/130738622/8225274.pdf
    • http://files.ucporegon.org/uploads/1/3/2/6/132695629/633609.pdf
    • http://files.marsal-solutions.com/uploads/1/3/0/7/130775704/06f73c9068dd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/foliwegimodevasisekima.pdf
    • https://cdn.shopify.com/s/files/1/0428/8443/2031/files/93210671101.pdf
    • https://cdn.shopify.com/s/files/1/0435/5345/6289/files/12916432854.pdf
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/47717008523.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/rupukunopadumuvatuxoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/xatogamixidulofixop.pdf
    • https://cdn.shopify.com/s/files/1/0432/7935/1976/files/ukulele_disney_songs.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/84862081410.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/jodunegexiludavavikemor.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_off00006a5e.bin
3530c1a6a61339668b94408e43a3f463ce78e69fe9b7cdafb2e8541ff2407287		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5E 5152 bytes
font_01_sfnt_off00007bf5.bin
4f55e99c3c69ed08b5c17d3af45446e953382bb39dce1eeca0db5f2ff9b16f6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF5 11148 bytes

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