Malicious PDF — malware analysis report

Static analysis result for SHA-256 f76af709b6ca9c39…

MALICIOUS

PDF

42.0 KB Created: 2020-08-04 14:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d39641ef3803fd51369da8c55c8beea6 SHA-1: 0e4abf184da85b17fef51dc3bfdae73d6c45cb40 SHA-256: f76af709b6ca9c39f9209b547fb882b6a6f50553347da7c04a299b2cbd6c5c6c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a redirector link to 'ttraff.com', which is known malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to the 'black panther party ten point program pdf' and the redirector URL, indicating a lure to potentially malicious content.

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=black+panther+party+ten+point+program+pdf
    • http://files.vcgallery.org/uploads/1/3/1/8/131856381/rokererukirejakifu.pdf
    • http://files.partnershipfortheartsgroup.org/uploads/1/3/1/0/131070379/2133cbbe.pdf
    • http://zitipidi.lbcevansville.com/uploads/1/3/2/7/132741334/vidol.pdf
    • http://files.prompt.ca/uploads/1/3/2/7/132740716/bifoxulukenenipanes.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/xagenobijigub.pdf
    • https://cdn.shopify.com/s/files/1/0432/1302/9540/files/84683286528.pdf
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/74982317470.pdf
    • https://cdn.shopify.com/s/files/1/0430/1501/2511/files/kinetova.pdf
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/39162300660.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/87878255418.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/muwexonaxawikonalowubemi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/7615823031.pdf
    • https://cdn.shopify.com/s/files/1/0428/3750/8252/files/7719675562.pdf
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/apprendre_l_alphabet_arabe_pour_les_petit.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/97427020332.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/4654761341.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_off000063ea.bin
59e741fe347abf6e626713782b0f31d3f35e8bb15d2c8be6c96186cd6ff510cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x63EA 5608 bytes
font_01_sfnt_off000076e3.bin
81be609a41e3aff10312d8614978fd7853cbdef8239564d2c63fca0ac0945a4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E3 10848 bytes