Malicious PDF — malware analysis report

Static analysis result for SHA-256 69079461259010be…

MALICIOUS

PDF

55.3 KB Created: 2020-08-31 02:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1447fe6f2a29bacc8b38f1679a3a850 SHA-1: 4d46005e5104378f0cb473ac0f4b4a8566b2d722 SHA-256: 69079461259010be8af907e6ef16d1d47b385e12cac6d7d1e5260d9ca4207492
154 Risk Score

Malware Insights

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

The PDF contains embedded links and text designed to trick the user into clicking on a URL that leads to malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/wix?keyword=picmonic+anki+deck, which is associated with known malicious redirector activity. While the document body is heavily obfuscated, the presence of numerous PDF links and the critical heuristic firing indicate a clear intent to redirect the user to harmful 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/wix?keyword=picmonic+anki+deck
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/89530488327.pdf
    • https://cdn.shopify.com/s/files/1/0432/9488/4000/files/parent_brag_sheet_samples.pdf
    • https://cdn.shopify.com/s/files/1/0447/2219/2537/files/tennessee_williams_the_glass_menagerie.pdf
    • https://cdn.shopify.com/s/files/1/0430/9388/5089/files/57035566369.pdf
    • https://cdn.shopify.com/s/files/1/0438/7900/6376/files/beden_dili_allan_barbara_pease.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/fofekogurokipokutexisuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/39324742031.pdf
    • https://cdn.shopify.com/s/files/1/0466/4459/2805/files/xipepobilumuvatuxebonu.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a36d9949354433ca8684a5763695c9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_73ce61648c5b4a3c84af18dafa7dd60f.pdf
    • https://static.usrfiles.com/ugd/cf14a4_6e24d751c88d4a8cb9a086585164d751.pdf
    • https://static.usrfiles.com/ugd/b7082a_aa4ad01c62d3481387377c3c56ebded7.pdf
    • https://static.usrfiles.com/ugd/fd3290_229240ac17c5472b8aca11d85ce1e3c9.pdf
    • https://static.usrfiles.com/ugd/8c0e65_49c4e6db228b45619b5730f128c8d26a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ecafe7353ed4ead9ff7b02385f5eb06.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_off00009b5a.bin
a7490b71a05354e5fbeab31ba6cb57acc03115e817b91f7ebd8dbb6914716790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B5A 4844 bytes
font_01_sfnt_off0000abb7.bin
342135b3bdbb7e7ef96db6adcd3a370d65c21feb70d9eb40a62f1508e1eac757		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABB7 10728 bytes

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