Malicious PDF — malware analysis report

Static analysis result for SHA-256 294450c6a84d9244…

MALICIOUS

PDF

38.1 KB Created: 2020-08-31 09:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b20ee4c5c2e8435ddfd5aa8c102345b SHA-1: 69d55d75b02e0613632cf49c45aee2455a8eadad SHA-256: 294450c6a84d9244995cbdd840ecd6e9df54fc671f8fa1dcb42910e319bac120
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded URLs, with one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body and embedded links suggest an attempt to lure users to external sites, potentially for phishing or malware distribution. The presence of numerous links, including one to 'ttraff.com', indicates a likely SEO manipulation or link farm tactic to distribute 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/wix?keyword=el+partido+4.3
    • https://cdn.shopify.com/s/files/1/0431/8874/8452/files/battle_net_app_network_error.pdf
    • https://cdn.shopify.com/s/files/1/0452/8783/3762/files/la_psicomagia_de_alejandro_jodorowsky.pdf
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/84673489885.pdf
    • https://cdn.shopify.com/s/files/1/0439/0731/7912/files/chiari_malformation_symptoms_in_dogs.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/zapibanawuv.pdf
    • https://static.usrfiles.com/ugd/ec0c41_350e4ca0e7d1438e93db1c706dcf0b4d.pdf
    • https://static.usrfiles.com/ugd/b8c837_29761a4f13a847ff9d8959fd0521ee1f.pdf
    • https://static.usrfiles.com/ugd/fa32a6_3ff56a361fee4ee0a9c95d80ddc31db3.pdf
    • https://static.usrfiles.com/ugd/95089d_a7625a2231404b3eb11bbf0f53a5966e.pdf
    • https://static.usrfiles.com/ugd/c0b427_6afeea2cd58d45f39999fe72831312cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5b6b2e2ebab4cee956829f534e28626.pdf
    • https://static.usrfiles.com/ugd/b8c837_95c7f6ad57df4bddbf3a866824462b2a.pdf
    • https://cdn.shopify.com/s/files/1/0432/1017/8717/files/91520175977.pdf
    • https://cdn.shopify.com/s/files/1/0433/0618/8955/files/fawudidobapaxivo.pdf
    • https://cdn.shopify.com/s/files/1/0462/2211/4970/files/75432807365.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_off0000553e.bin
91411542b5100bb35d8fb0b3426f5f6a978b3814dacdf84f3f106d1bb1f819d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x553E 5016 bytes
font_01_sfnt_off00006668.bin
426ade6ce5ee9196e58f81656f07b23b6d141d1c8288ba1b9f488df950cb62bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6668 11224 bytes