Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c8ac8cade3fb1b…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 14:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 065dcd732cef9ad88ee5e2eea36a2107 SHA-1: 238ccde312ab2f64332f430b4fd6262deb2ea9f4 SHA-256: 14c8ac8cade3fb1b55c4d7caeefdbbd1991a2ea90da506dbd500995baa44f8ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=aankh+mare+simba+song+free`. The document body also contains this URL and other links, suggesting a link farm or redirection attempt. The presence of multiple embedded URLs and the ML classifier's high confidence indicate a malicious intent, likely to redirect users to a phishing or malware distribution site.

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.cc/pify?keyword=aankh+mare+simba+song+free
    • http://duzul.hstriclub.org/uploads/1/3/2/3/132303382/pulawar.pdf
    • https:///a10.gaanacdn.com/images/song/88/24643688/crop_175x175_1544078542.jpg
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/gusekakerod.pdf
    • https://cdn.shopify.com/s/files/1/0444/3347/3703/files/postpartum_depression_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/barepasuwomube.pdf
    • https://cdn.shopify.com/s/files/1/0443/2723/9836/files/holding_company_structure.pdf
    • https://cdn.shopify.com/s/files/1/0428/5621/8780/files/baixar_apk_reader.pdf
    • https://cdn.shopify.com/s/files/1/0430/0914/7043/files/sedibarujepik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/baxebopumeruda.pdf
    • https://cdn.shopify.com/s/files/1/0455/3284/0101/files/west_side_story_vocal_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/18242278777.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2646/files/dizezejesumeti.pdf
    • https://cdn.shopify.com/s/files/1/0447/8212/5205/files/alpha_beta_pruning_in_artificial_intelligence.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/kivuxedatavadapezukaveno.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005495.bin
93af98a77487b52f3362370242a48a2da4c541804c1957da037ec6b9b1427a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5495 5340 bytes
font_01_sfnt_off00006694.bin
4d0694e2e7bdde80cb2daad6c44f5d84fd0087e2d50f13e5fa8946b6c5fe2a40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6694 15104 bytes
font_02_sfnt_off0000957e.bin
d086c40155d1e9f6883c9ceeb20019f27dffed7002e4403aca39c82c6aa61934		 pdf-font-stream PDF embedded font (sfnt) at offset 0x957E 3024 bytes

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