Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9dc4632b049e3e5…

MALICIOUS

PDF

33.3 KB Created: 2020-08-19 18:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aca8eac7de0cc241963f7350cac2a66d SHA-1: dc6a9115a885926ef8b462d47c9a3c2a3f06582d SHA-256: e9dc4632b049e3e5a895b15b36bcca85d3599e4c70d2dae806556ce3a2de715c
150 Risk Score

Malware Insights

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

The PDF contains a prominent link that, when clicked, redirects through a malicious domain ('ttraff.com'). This domain is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text and URL as the heuristic findings, reinforcing the malicious intent. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=weather+report+for+libertyville+illinois
    • http://jitapozet.thevikingtrubie.com/uploads/1/3/0/7/130739777/8802457.pdf
    • https://cdn.shopify.com/s/files/1/0429/5111/4908/files/best_psp_games.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/psychological_trauma_theory_research_practice_and_policy.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/zoworetirav.pdf
    • https://cdn.shopify.com/s/files/1/0428/6752/3743/files/62205559963.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80278007767.pdf
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/72997823906.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/gezupupawaluladeneberonag.pdf
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/80880646378.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/pdf_que_es_el_autismo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6405/6225/files/java_calculator_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/rujobesuzewuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/guidelines_for_the_management_of_aneurysmal_subarachnoid_hemorrhage.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_off000045bd.bin
887c832e9df375247814303fc49d55749e9e737abcf6d9f8fc1ee268aa146043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45BD 5304 bytes
font_01_sfnt_off000057d5.bin
56f60f47c7e76ade0e79d0029abd90695f0a330ee6c0e4e2a87be7cfeb773866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D5 9640 bytes

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