Malicious PDF — malware analysis report

Static analysis result for SHA-256 60fac0d3fb671bab…

MALICIOUS

PDF

112.4 KB Created: 2020-09-13 15:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f92220aec4243348d610eed09c2703f9 SHA-1: 41585494b002c7028c9ca42c230ea42101c2eecb SHA-256: 60fac0d3fb671bab7369cf314157af9ecabc1408148f6ac574980b7aef63ba92
154 Risk Score

Malware Insights

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

This PDF file contains a heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.link'. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The PDF also hosts a large number of external links, many of which point to benign PDFs, indicating a potential link farm or SEO manipulation tactic. No scripts were extracted, but the presence of a malicious redirector URL strongly suggests a phishing or redirection attempt.

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.link/wix?keyword=walhalla+south+carolina+map
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/50de67_c6087745d02843a18f3e342cfb14d67d.pdf
    • https://static.usrfiles.com/ugd/54bec1_679a5094343242d8980621b3f0a01794.pdf
    • https://static.usrfiles.com/ugd/d17951_681aa048d64a473a9f2dcce47b018778.pdf
    • https://static.usrfiles.com/ugd/6bb4a2_093995b8b2184beea5e2effe8b87bca9.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf4fd5e7a2aa495abb1af9dae9d41512.pdf
    • https://static.usrfiles.com/ugd/115d6e_7145bcef7b584a7a86f9fa68a3963ccf.pdf
    • https://cdn.shopify.com/s/files/1/0429/3482/9222/files/plus_one_business_studies_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/cornerstone_biblical_commentary.pdf
    • https://cdn.shopify.com/s/files/1/0437/2434/1400/files/harmony_hall_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/4916/2654/files/36821463467.pdf
    • https://cdn.shopify.com/s/files/1/0479/5190/4935/files/83500002696.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/23116549925.pdf
    • https://cdn.shopify.com/s/files/1/0431/6548/3172/files/kiwugizonajedelot.pdf
    • https://cdn.shopify.com/s/files/1/0440/5205/4181/files/21987214890.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_off00016ff5.bin
40d0de96ecf470de46735b38ac7885bbdba29b40a521118d0b27416ea7a1d088		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16FF5 4952 bytes
font_01_sfnt_off0001809a.bin
6b4c6fd4788577eed041158eabe414818679014051b62b800fb94a5f0d202743		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1809A 11296 bytes
font_02_sfnt_off0001a64e.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A64E 4324 bytes

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