Malicious PDF — malware analysis report

Static analysis result for SHA-256 059d1f90bc838468…

MALICIOUS

PDF

39.7 KB Created: 2020-08-08 03:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22b73dcc7fdb97215ab6da2f20f92029 SHA-1: 4fa745f2aa39f64384fcb1d8257ba84af6d58b74 SHA-256: 059d1f90bc8384682b58f2f8967423965a2f77fb96815670f05bbfe533ff6b2d
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to trick users into visiting malicious infrastructure. The presence of multiple Shopify links, some flagged as benign and others unknown, indicates a link farm strategy. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=durga+saptashati+path+download+pdf
    • http://files.cherrycanyondairy.com/uploads/1/3/0/7/130776490/risezudajiwofoma.pdf
    • http://files.poshpoocheswalk.com/uploads/1/3/0/7/130739404/wawuzu.pdf
    • http://files.saniboxx.com/uploads/1/3/0/7/130738548/1874116.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/6367/0939/files/51928036603.pdf
    • https://cdn.shopify.com/s/files/1/0437/2063/8632/files/12213776217.pdf
    • https://cdn.shopify.com/s/files/1/0435/6741/5457/files/28900309193.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/sinidisetenosun.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/darkest_dungeon_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/tebulafuxotukode.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/fesotobu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/29360054455.pdf
    • https://cdn.shopify.com/s/files/1/0450/6599/4392/files/business_plan_proposal_format.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_off00005ca9.bin
87e6808a02478d009924c68ba246fa49fe902c2a754ef2fda3203a35e32b5e40
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA9 5396 bytes
font_01_sfnt_off00006f14.bin
0409aa0b7e8763f3690434895ccfb10a152cc4e0fe7e9350b5eedc028b8b3506
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F14 10228 bytes