Malicious PDF — malware analysis report

Static analysis result for SHA-256 5591a1e3642ec382…

MALICIOUS

PDF

38.8 KB Created: 2020-08-02 23:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 774af78ea2ff8fc2b49dc5a48ccaa521 SHA-1: 81d471bc2cafaeb495fca669c385a9b7b1fcc49b SHA-256: 5591a1e3642ec3825be8ae473e46856ee1222dd2a6ebc97db25efe656b7cfcc2
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One critical heuristic firing points to a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=transformers+mod+1.+7.+10'. The document body contains garbled text but also includes the same URL, suggesting it's an intended part of the lure. No scripts were extracted, but the sheer volume of links and the identified malicious redirector strongly indicate a phishing or malware distribution attempt.

Heuristics 3

  • 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.
  • 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=transformers+mod+1.+7.+10
    • http://files.cigdemslankard.com/uploads/1/3/1/6/131606758/63ca6.pdf
    • http://files.necropheliaclothing.com/uploads/1/3/2/6/132681033/9056856.pdf
    • http://files.susanlane-gardenscapes.com/uploads/1/3/0/7/130740530/puramutisigema-ridife-tolifojobifa-teregaximo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/vepegubegufegiti.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2943/files/71160957558.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9263/files/7421220508.pdf
    • https://cdn.shopify.com/s/files/1/0434/5928/1061/files/ziserebibitonemigegeki.pdf
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/nami_pro_builds.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zorugeligix.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/troy_bilt_super_tomahawk_chipper_shredder_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/sosurajiwimomalefarafi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/kafesirap.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/57732499706.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a6e.bin
58deec7c08430e375ffb0c0dbbf854715559888dc185e42f8b3a605b42097990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6E 5276 bytes
font_01_sfnt_off00006c53.bin
22cb9b8735eb10f203cce763442d7f1d5b93a5b427e5774b3f6b6d311865c6bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C53 10008 bytes

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