Malicious PDF — malware analysis report

Static analysis result for SHA-256 def96b10b00f6748…

MALICIOUS

PDF

43.6 KB Created: 2020-08-13 23:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f30d222ab876d18d3bf25767eb5abd34 SHA-1: fb73c696bbc29ecfd9cc691a96126a4a774ce51c SHA-256: def96b10b00f67488d66b0b53a23f7422f724d16615f09f83de66420d91d0c47
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to 'ttraff.com' with a keyword suggesting a lure for online template creation. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=blogger+template+creator+online', reinforcing the lure. The presence of numerous links to Shopify-hosted PDFs suggests a link farm or content-spinning operation.

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=blogger+template+creator+online
    • http://zufotiro.sayyestothecake.ca/uploads/1/3/1/4/131437812/274e0.pdf
    • http://xobut.larrylroberson.com/uploads/1/3/0/8/130813094/c7e485e5.pdf
    • http://files.scwineryreview.com/uploads/1/3/1/6/131606198/bakexowi-xawope-nedowividiruliz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/18652407292.pdf
    • https://cdn.shopify.com/s/files/1/0438/0521/2832/files/suvupumoda.pdf
    • https://cdn.shopify.com/s/files/1/0428/3269/1367/files/pesquisa_bibliografica_artigo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/genesis_simple_share.pdf
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/89301668998.pdf
    • https://cdn.shopify.com/s/files/1/0430/9919/3501/files/49675277867.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/rijipawewam.pdf
    • https://cdn.shopify.com/s/files/1/0451/8179/6503/files/ielts_academic_reading_vocabulary_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/sokifovozaxatip.pdf
    • https://cdn.shopify.com/s/files/1/0437/6385/9610/files/22944166133.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_off00006d74.bin
8cea84b026db8ae5162997caa0e0efe882a60ce942274f73427cbb9428400db1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D74 5124 bytes
font_01_sfnt_off00007eca.bin
f4717a9f6c2483bf04a2df0c49985c9c5bc92f73dc439e9ab4f749c1ffda532a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECA 10240 bytes