Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c5bb2e52072ee3…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 02:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3564489461eba6221c3dffa1f5f0cd70 SHA-1: b56ee983298a2c5bddf12c2d9ae31aa449a883a1 SHA-256: 46c5bb2e52072ee39fdf0eae06a87aefd31190927856fd711dd9e1f7ea5fc4a0
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=english+grammar+rules+tenses+pdf, which is likely used to funnel victims to further malicious content. The document body is heavily obfuscated, but the presence of multiple PDF links, including some pointing to potentially malicious domains, indicates a link farm attack pattern. No scripts were extracted, limiting further analysis of the payload.

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=english+grammar+rules+tenses+pdf
    • http://videw.ohhousecleaners.com/uploads/1/3/0/9/130968931/wutelus_wetagigo_femejufeled_kulinupugemoku.pdf
    • http://kewasul.carolinealbers.com/uploads/1/3/0/7/130740563/54d444.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2564/files/cdcr_title_15.pdf
    • https://cdn.shopify.com/s/files/1/0435/8746/9471/files/29404704135.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/fubituvewos.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/zazazavejasapowa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5176/8225/files/21125280277.pdf
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/yugioh_card_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/9939/8052/files/suxizatuborolebu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4950/0315/files/kisekuzobiziketevoj.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_off0000684e.bin
e70a9eb687b82d2f9b7f2f33c31312ead7e8dd4e1724ced00b24d53b0d13e68e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x684E 5412 bytes
font_01_sfnt_off00007a87.bin
bbc4f2d770269a590d5c6e7fc8a8ea3c867f17306a8b23c1e28643f319d9f492		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A87 9904 bytes

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