Malicious PDF — malware analysis report

Static analysis result for SHA-256 3118eaf7c86437a4…

MALICIOUS

PDF

44.3 KB Created: 2020-08-20 11:21:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2257bf98a43fb31cbbee75845c2307dd SHA-1: 6a1190687e5ebad373d3dc4a8ffeb1723c88e4a2 SHA-256: 3118eaf7c86437a48ec17fa9f5235b26e089f03f81eb2b41c144c4dd0c3b4c92
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary URL, 'https://ttraff.com/pify?keyword=courtroom+sciences+court+reporting', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links, suggesting a phishing or scam attempt designed to lead users to malicious content through a chain of redirects. No scripts were extracted, but the structure strongly suggests a malicious redirection campaign.

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=courtroom+sciences+court+reporting
    • http://files.greenevilletnhikingcycling.com/uploads/1/3/1/3/131384127/ab6a72.pdf
    • http://files.iniic.com/uploads/1/3/1/3/131398455/ragefufopu.pdf
    • http://voxej.monroeinfo.com/uploads/1/3/1/4/131482952/2842176.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6471/files/66913347307.pdf
    • https://cdn.shopify.com/s/files/1/0434/5679/0681/files/63661822241.pdf
    • https://cdn.shopify.com/s/files/1/0441/2401/2696/files/business_plan_sample_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/49660652816.pdf
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/acronis_true_image_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/xilafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/venakuzerex.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4722/files/timedosowenivodefuxugoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/53150451053.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9631/files/vofibejolowiwobijodolagi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/soxulofe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zosogorimojafi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/36835031047.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_off00006388.bin
96d26086b3bcf7ee6a369b0ec375c771703b63f549959d2f2d96f7abd729139e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6388 4916 bytes
font_01_sfnt_off0000742e.bin
382b04eb0d5f628fb88da0a2fa228d1de12c9162b16a4a08d0fed023ee81d868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742E 15700 bytes

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