Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72e962c1beb059c…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 21:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee854f686a62acb1e87138b5004e45f2 SHA-1: c64c3b9d5678dd13f9114968419549cbd5e7cde9 SHA-256: d72e962c1beb059c05d8330d97055c0c8df0e2a2c4bcc8536d84db4cc1e62093
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=auggie+and+me+pdf+book'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body also contains this URL, reinforcing the lure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and click-through rates to the malicious redirector.

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=auggie+and+me+pdf+book
    • http://files.philipcleaning.com/uploads/1/3/1/4/131453302/5223937.pdf
    • http://files.madhatterspopcorn.com/uploads/1/3/2/6/132681062/tagoxudaxem-sisukapexowepid-bexumug.pdf
    • http://files.monotennisclub.com/uploads/1/3/1/1/131164211/fozuse-mofovusug-runizenikapisim.pdf
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/bangkok_airport_terminal_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/byomkesh_bakshi_english_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/noluber.pdf
    • https://cdn.shopify.com/s/files/1/0434/4761/5650/files/86286066671.pdf
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/blitzkrieg_bop_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/rakigogepuwepi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/piregufevir.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/69894850018.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/gamezubusom.pdf
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/61598425654.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/72108520950.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_off00006405.bin
1e3707e066298474fd9e8dda9d1e1c4dfbb66c1c8b327aa372ac799d15dfa47a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6405 5248 bytes
font_01_sfnt_off000075da.bin
90a48bf627dae6b5e57126c1ef3a7fbae951709235b3feaedd4d05c886e5a068
pdf-font-stream PDF embedded font (sfnt) at offset 0x75DA 10192 bytes