Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4049201fee534f…

MALICIOUS

PDF

42.4 KB Created: 2020-08-20 23:38:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b45942710b516dc136916c1acdd8b49 SHA-1: 6352a022042ced8ecd791878f1bc5b5794e711a6 SHA-256: 0a4049201fee534ff467e14ff712c1a6f4c1745035666ed7171d2b90dfcaa697
194 Risk Score

Malware Insights

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

The document contains a lure for an advance-fee scam, presenting a fake offer for free software. It embeds multiple links, one of which, https://ttraff.com/pify?keyword=photoshop+cs6+pencil+brush+free, is identified as a malicious redirector. The presence of numerous links, including those to Shopify, suggests an attempt to create a link farm or distribute malicious content through various channels.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=photoshop+cs6+pencil+brush+free
    • http://files.roguepugs.com/uploads/1/3/0/9/130969831/363244.pdf
    • http://files.frostbites.net/uploads/1/3/0/8/130814101/3676574.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/xugesipojudi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/template_ppt_lucu_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/primary_auxiliary_verbs.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/light_saber_forms.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/mimenidaxexevo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/bwv_1006a_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/86545371720.pdf
    • https://cdn.shopify.com/s/files/1/0430/9788/2773/files/kagazoga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/8580774413.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4756/files/supumux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/finilodonarota.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068d4.bin
9280c99a9d4ffaf8a63b339e207ae5b0ccb872f0f18c51c907e763f5eb57d8d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x68D4 5188 bytes
font_01_sfnt_off00007a6e.bin
d8afb77528d5eca4b63a89d73f711c078d48495a2bc4ae76de04670db3a17648
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6E 10128 bytes