Malicious PDF — malware analysis report

Static analysis result for SHA-256 11919c6d54b161aa…

MALICIOUS

PDF

40.1 KB Created: 2020-08-08 15:36:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad9e7b78d9cc188052310bb985113b3c SHA-1: 65ba6df34df526c82270364cc392e88f769ad547 SHA-256: 11919c6d54b161aaa55adac4ea4fa367be8b673ddb920790b8141ec0fd5e7b47
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains but also including a suspicious redirector URL (ttraff.cc). The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's a link farm designed to redirect users. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive traffic to malicious or SEO-spam 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.cc/wb?keyword=history%20of%20computer%20generation%20pdf
    • http://mezopa.holytrinityparishnh.org/uploads/1/3/0/7/130776499/be16f.pdf
    • http://files.lornasredskygeckos.com/uploads/1/3/0/8/130813094/vuwomoriluxa-kimoma.pdf
    • http://files.eaohp.org/uploads/1/3/2/6/132695258/6234520.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7361/7568/files/37586445731.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/book_for_synonyms_and_antonyms.pdf
    • https://cdn.shopify.com/s/files/1/0432/6119/8500/files/pifepufivakagikiribofawep.pdf
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/cevdet_bey_et_ses_fils.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/jupugawipi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/nekutoso.pdf
    • https://cdn.shopify.com/s/files/1/0438/6763/5867/files/air_pollution_control_ordinance.pdf
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/adulthood_is_a_myth_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/2784/7576/files/certificate_of_appreciation.pdf
    • https://cdn.shopify.com/s/files/1/0440/8927/8616/files/44474661747.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/world_time_zone_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/roruzamofinubajomololira.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/44789543302.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_off00005e71.bin
40cb121c0836cf310db5a71f5915336535e35a0d41eb80951ab808201bd9e96c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E71 5508 bytes
font_01_sfnt_off00007120.bin
e087fadd49479f4c657dbed1fc977535065e6db79d15dbcd7daa800402caa713		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7120 10100 bytes

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