Malicious PDF — malware analysis report

Static analysis result for SHA-256 5240d4e9207af353…

MALICIOUS

PDF

47.0 KB Created: 2020-08-22 20:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1fb139153d7fd9a0c173b1de7c2296d SHA-1: 0b4338599cecadbab6a821adcd7440895f1716a2 SHA-256: 5240d4e9207af35317d98799d024ee59b71a1ae6fc665f33b031604f45bf6af1
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to furniture and a URL that appears to be part of a link farm, suggesting a lure to a malicious site. The primary malicious IOC is the ttraff.com URL, which is likely used to redirect users to further 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=building+a+platform+bed+with+drawers+underneath
    • http://files.briannabelmonte.com/uploads/1/3/1/4/131483830/simawufuliwa.pdf
    • http://luwow.ramtech.ca/uploads/1/3/1/3/131380550/3468829.pdf
    • http://files.azwatersolutions.com/uploads/1/3/2/3/132303337/tiwapepewejaxemu.pdf
    • http://files.crowsnestpassmusicfestival.com/uploads/1/3/1/6/131607010/sarap.pdf
    • http://files.themaximumgamer.com/uploads/1/3/1/4/131407089/50161342ee9f.pdf
    • https://cdn.shopify.com/s/files/1/0447/4391/7719/files/voxitodarixo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/26786538075.pdf
    • https://cdn.shopify.com/s/files/1/0462/0088/1315/files/9572064852.pdf
    • https://cdn.shopify.com/s/files/1/0429/6038/8252/files/82188878557.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/57760168256.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/orespawn_1._7._10_curse.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/91870164889.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/89597871002.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewubi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0731/7912/files/nogewinakamawodefez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/57422492230.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_off0000793b.bin
34b7c2e055472c73a4d37ec3f662a3a5ed7990f5695672d9985c765ac60322ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x793B 5736 bytes
font_01_sfnt_off00008c98.bin
74a2009457420b78c4daec2471b0b69a5603a60ef5463d620c56b11f06f054e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C98 9996 bytes