Malicious PDF — malware analysis report

Static analysis result for SHA-256 11789cb708719d2a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 10:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48ad589841a072e716b9dacc0a559907 SHA-1: 5911c49977d0b18699b4e08daa837b5249b89663 SHA-256: 11789cb708719d2ac74388edddfe424b01de0558bdaec5e3c5bc6548ff262e74
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. One of the primary links, https://ttraff.cc/pify?keyword=anime+icon++free, is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

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=anime+icon++free
    • http://files.thurstoncountyrw.org/uploads/1/3/0/7/130738859/8936380.pdf
    • http://somet.utahyouthcourts.com/uploads/1/3/2/3/132303354/jurimagilivom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/ninupegot.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/arthur_jafa_my_black_death.pdf
    • https://cdn.shopify.com/s/files/1/0436/9481/7445/files/60047747593.pdf
    • https://cdn.shopify.com/s/files/1/0429/9934/9407/files/nai_tl_scintillation_detector.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/zulamokamafilivez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6961/files/falujidabafagobu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/29026192620.pdf
    • https://cdn.shopify.com/s/files/1/0429/2516/2652/files/9965700879.pdf
    • https://cdn.shopify.com/s/files/1/0445/3974/0319/files/blow_up_mattress_target.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/tulopabisijojirokeruw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/adblock_browser_for_android_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/dagujiju.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_off00005b21.bin
3f3690cd6f3a67dde5fce433efe04d035ac4f06121c8401e431cd15646b85156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B21 4304 bytes
font_01_sfnt_off00006985.bin
f6653b09f4ce56f429c3bca26dab3a5ec4ae5a8dd4b25b0f4ee9ab7caceca350		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 10400 bytes
font_02_sfnt_off00008d24.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D24 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.