Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ddcf9bc957f921…

MALICIOUS

PDF

40.7 KB Created: 2020-08-24 01:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8220075862cb87cf8c23bda76914b5a7 SHA-1: a1c1c4a68eb354c6e41dc6af2967059a26ebd9ec SHA-256: 08ddcf9bc957f921df5990ab2cdf25682f2b020d62118ddb90d0749484b60e7c
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=google+camera+redmi+note+7+pro+apk', is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain similar lure text and URLs, suggesting a phishing or scam attempt. The presence of numerous external PDF links further indicates a link farm or redirection strategy to obscure the ultimate malicious destination.

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=google+camera+redmi+note+7+pro+apk
    • http://files.bambooartscenter.com/uploads/1/3/1/8/131857071/pujeriwetid-napofemerumaw.pdf
    • http://mifem.houtsandhome.com/uploads/1/3/0/8/130814297/fa6080.pdf
    • http://fukidub.magnifydance.org/uploads/1/3/1/6/131606000/pewatabogizenirik.pdf
    • http://files.houstoncleaningsquad.com/uploads/1/3/1/3/131380995/garikiporuwetofemitu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0462/6654/8373/files/50th_birthday_invitation_cards_templates.pdf
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/function_prototype_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0432/3924/3931/files/23682756756.pdf
    • https://cdn.shopify.com/s/files/1/0433/7349/4430/files/57557811115.pdf
    • https://cdn.shopify.com/s/files/1/0431/9041/9616/files/film_indo_ajari_aku_islam.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/nipupixinusupokebovopaju.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/72737452180.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/arduino_serial._print_formatieren.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/solemifekukofemutidutato.pdf
    • https://cdn.shopify.com/s/files/1/0436/2154/8194/files/assertive_training_techniques.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_off0000604c.bin
c84b462d666b0c66ae2357a44a8da4c06d8e52f91b8101c96a758e7d7a37da55
pdf-font-stream PDF embedded font (sfnt) at offset 0x604C 5392 bytes
font_01_sfnt_off00007298.bin
f380d0d5716bd9155f9e9085a9f76fea20e9d6e522b086be1fc90bb3ddd98d69
pdf-font-stream PDF embedded font (sfnt) at offset 0x7298 10412 bytes