Malicious PDF — malware analysis report

Static analysis result for SHA-256 709351666d907a57…

MALICIOUS

PDF

46.3 KB Created: 2020-08-03 03:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c052ed1273a1ddee29d470f73eda7d0 SHA-1: ee9216efe11006da638cc942cde4973f4beed6bf SHA-256: 709351666d907a57ba87935dda6a5754b1bf1ae72870ddae9a3228e6e54913f1
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. It also features a link farm with numerous PDF links, suggesting an attempt to distribute content or traffic. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the exact payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=minecraft+xbox+360+maps
    • http://files.sacrp.org/uploads/1/3/1/0/131071277/dulukobolewas-lerenopanoto-xumati.pdf
    • http://files.e3j0t.com/uploads/1/3/2/6/132681398/falokojiziful_kadad_vixozukidajoni.pdf
    • http://files.sfxfaithformation.org/uploads/1/3/2/7/132740533/vijuzazevudutepe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1236/6241/files/givowemawawulobatanu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/pinebuvir.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/vorojiwudomobibo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/bafopolofari.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8412/files/nipukuwebipob.pdf
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/38465379808.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/borutazaweluv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/weber_dcoe_tuning_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30408896218.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/bisovatawubilewoxeteja.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_off00007665.bin
4ce64c2c64c2a849767f146c73b4e31170b6f6e061c0c8ac775c68aa759d7208		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7665 5804 bytes
font_01_sfnt_off00008a18.bin
f8e08c705ad1ede9b378dd3346618abdbcbca93b80e84f9531f737e82d4a9cd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A18 10120 bytes

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