Malicious PDF — malware analysis report

Static analysis result for SHA-256 2697c0f9b26a0ca3…

MALICIOUS

PDF

47.1 KB Created: 2020-07-24 07:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1314d77b953ebb307eda4cf55318caac SHA-1: 67f9b31eea8a7c90ad252c4342ea40a8852288f0 SHA-256: 2697c0f9b26a0ca3d8de3a5cb754486efdad4c9448f95637a4b9cf9e3386d443
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though heavily obfuscated, appears to contain a lure related to 'best weighted blanket reviews consumer reports'. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or redirection strategy. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

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=best+weighted+blanket+reviews+consumer+reports
    • http://files.prideofpa.com/uploads/1/3/1/4/131406337/kolonoma_pogenerebude_tidako_vojulenujegowi.pdf
    • http://files.happypositivesuccessful.com/uploads/1/3/0/7/130738969/mofarobosedibogifaf.pdf
    • http://files.mootingsyndicate.org/uploads/1/3/1/4/131483253/lewotidedimitufemini.pdf
    • http://files.precisionartstudio.com/uploads/1/3/1/3/131381839/zijujasovogilat-dikake-pufila.pdf
    • http://files.leanderboatclubofhamilton.com/uploads/1/3/1/3/131384635/8bc5af06af15f89.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/nolugimowonomusumiboxeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/zenuvumekiwovu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/86345963169.pdf
    • https://cdn.shopify.com/s/files/1/0438/1877/8781/files/ziwerojeperutonuxidesil.pdf
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/pogapekebogusozujut.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/xivarot.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/rezonilekelagumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8506/1541/files/tosubiluzu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1808/4771/files/43597504614.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/64048938207.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/gokimapik.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3493/files/fuganisijoripodokaku.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/
    • https://cdn.shopify.com/s/files/1/0438/1877/8781/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a29.bin
c12702a8d98fe432ba1b798ed26f9e79612e2572fdcb0ef6996f74a02e97b009		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A29 5772 bytes
font_01_sfnt_off00008da6.bin
e3fbfccd6bc4310a92038af5ed82110aa087736a393e1956cd28a3862db2554c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA6 9780 bytes

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