Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee951dc63d97b701…

MALICIOUS

PDF

70.1 KB Created: 2020-08-02 11:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 317ae3e9411415fe2f032e18a1fc8032 SHA-1: 982043da18c172e8f6477b24cad8f0aa1d1f0a0e SHA-256: ee951dc63d97b701b6e2f1e157856b4aa85a1aa030df98d4571989e99fb01530
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is a known malicious domain. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to direct users to a potentially harmful site for phishing or malware delivery.

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=stock+and+watson+solutions
    • http://files.phchastings.org/uploads/1/3/2/8/132814593/zewarurasanibe-wemagirib-moxojo-mipitoses.pdf
    • http://files.wmbilljones.com/uploads/1/3/1/4/131437683/2105466.pdf
    • http://files.camerasforconservation.com/uploads/1/3/0/9/130969237/9661398.pdf
    • http://files.gladstonevolleyball.com.au/uploads/1/3/1/3/131383934/8849852.pdf
    • http://files.shawneefreemasons.org/uploads/1/3/1/8/131856743/virakejuliv_fudixa_puxajer_kumapisetit.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/gumudaxupuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4500/3169/files/tolafetazit.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8989/files/caves_of_qud_slumberling.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72518400380.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdf
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/viwafadikuvav.pdf
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/rupita.pdf
    • https://cdn.shopify.com/s/files/1/0439/4660/6760/files/fegup.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/todivaro.pdf
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/roxikevinikidugopowomobet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/33465317250.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac3c.bin
fe17f1dd142f269010f027d8aea94806719d331871c97d732277be5320f5d4a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC3C 5096 bytes
font_01_sfnt_off0000bdbe.bin
37e09051d1e892ce033f41d02c603ba344b4ae205563eb91a38b488a20a21af5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDBE 17484 bytes
font_02_sfnt_off0000f471.bin
5c268dc73c795f57f623654c92cfa5eab978377535ac8a20fb74462dad945007		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF471 16596 bytes

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