Malicious PDF — malware analysis report

Static analysis result for SHA-256 71a92708052c7e5e…

MALICIOUS

PDF

46.7 KB Created: 2020-08-20 04:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6916a251426c5ea4ae06825601f4dcdc SHA-1: ab2eedf733f4bb481387d035af4185045ca820a3 SHA-256: 71a92708052c7e5e412a9281b85e21d159428673d71bc5c448ac9f6969f0c560
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 likely used to direct users to a phishing or scam page. The document body, though heavily obfuscated, contains text related to 'Airpods 2 android uyumlu mu' and the malicious URL, suggesting a lure to trick users into clicking. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm used for SEO manipulation or to host further malicious 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.ru/pify?keyword=airpods+2+android+uyumlu+mu
    • http://kekeve.elwoodmadison.com/uploads/1/3/0/7/130739616/nugadep_towijonito_wepuvumateze_lesolu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/1378/2179/files/bmw_m3_2018_manual_transmission.pdf
    • https://cdn.shopify.com/s/files/1/0430/8067/9577/files/bostan_saadi_in_farsi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/datawuvezojoritufexaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/physical_chemistry_silbey_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/bogokujezobefajixu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2811/7661/files/77853123.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/20489548056.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/2002/files/19659455846.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/45133297668.pdf
    • https://cdn.shopify.com/s/files/1/0428/7977/8979/files/kisufewoberixifiva.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/pdf_to_mac_word_online_converter.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/luverad.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_off000073e9.bin
51618e30d3c63baebce8fa3999d0c942f938f091dc31edd60ed79fc587294d2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E9 5328 bytes
font_01_sfnt_off000085ef.bin
acaf8feac8041d876b837cc0045be609b64ddde4bc6ee88eaf1aa7d4aa7f7aa5
pdf-font-stream PDF embedded font (sfnt) at offset 0x85EF 12424 bytes