Malicious PDF — malware analysis report

Static analysis result for SHA-256 607360c14bd322a0…

MALICIOUS

PDF

62.0 KB Created: 2020-08-04 09:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b96c1e5a7d31e6284d21da9bb2c671a7 SHA-1: 38cca7513f1608629907e913c1649e874ed7dbb8 SHA-256: 607360c14bd322a06dbfdbd119443913aac7fcc45c44005083e296f0650d3ece
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for a printer manual. The document also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, likely for SEO manipulation. The ML classifier strongly indicated maliciousness, and the overall structure suggests a phishing or scam 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.ru/pify?keyword=canon+9000f+manual+pdf
    • http://files.thepractitionertable.com/uploads/1/3/1/4/131410158/jupozozomi.pdf
    • http://files.marrickme.com/uploads/1/3/2/6/132681969/983d61bdd213f35.pdf
    • http://files.elevagplorders.com/uploads/1/3/1/4/131453247/jibadidetaginan.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/breitling_aerospace_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0706/files/gurezowofemisano.pdf
    • https://cdn.shopify.com/s/files/1/0430/9241/0525/files/45231951295.pdf
    • https://cdn.shopify.com/s/files/1/0438/4499/3181/files/95422370047.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/datuparipusor.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4266/files/86086527768.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8592/files/24149804502.pdf
    • https://cdn.shopify.com/s/files/1/0433/5891/2662/files/80103233761.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/http_sites_list.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_off0000a973.bin
5867bf5f3fed17fbbd235626d0517409112f3602ae8bcbacd73ab2ddf3942483
pdf-font-stream PDF embedded font (sfnt) at offset 0xA973 4872 bytes
font_01_sfnt_off0000b9e2.bin
d689cfe9c4179dd445e2760703c91a731b2b542c30daaabcf8c0b3ccc510a84e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E2 10516 bytes
font_02_sfnt_off0000dd8f.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8F 4324 bytes