Malicious PDF — malware analysis report

Static analysis result for SHA-256 11df66f65d86efcf…

MALICIOUS

PDF

42.0 KB Created: 2020-08-22 15:00:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3508d660321c5f6e2cdd7af82ca9b777 SHA-1: b1a273801d8e86c28ef2b67fe25148f54b14da8c SHA-256: 11df66f65d86efcf2640a1146a53a90e1bb7ad053d19504313e834b7a9767c44
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=bandit+150xp+manual'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious infrastructure. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning tactic, likely to obscure the true malicious intent.

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=bandit+150xp+manual
    • http://files.raciallyjustutah.org/uploads/1/3/1/3/131382583/6083774.pdf
    • http://files.finksdeli.org/uploads/1/3/2/7/132741222/5b0259.pdf
    • http://files.redatnightstudios.com/uploads/1/3/1/6/131636987/givomab.pdf
    • http://files.kristinsfinefoods.com/uploads/1/3/2/7/132712040/denewevejuku.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/vufemibatebuzag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/votobozefefajoruweze.pdf
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/amadeus_director_forman_crossword_clue.pdf
    • https://cdn.shopify.com/s/files/1/0428/4320/9895/files/80149408303.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/tivitavawefujefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/18608031532.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/diramomo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4567/5420/files/4155617813.pdf
    • https://cdn.shopify.com/s/files/1/0431/5545/6164/files/tumedekaxuroparazojisatal.pdf
    • https://cdn.shopify.com/s/files/1/0439/2439/0056/files/bebawokirumagezitijud.pdf
    • https://cdn.shopify.com/s/files/1/0435/1921/3727/files/xumerolotuxenijisiba.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005050.bin
8e11707b2aa1ac03e0311604e7eb20b5c71c4517b0ef469f9040aaace92ac189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5050 4920 bytes
font_01_sfnt_off000060ed.bin
ae25dc02847b57a77c90f1e192365e9a56486c949d89fefd523dcf4918c7786d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60ED 13692 bytes
font_02_sfnt_off00008ba8.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA8 4324 bytes

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