Malicious PDF — malware analysis report

Static analysis result for SHA-256 009ef1247e9c380c…

MALICIOUS

PDF

40.1 KB Created: 2020-08-29 06:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de322eedf41543ea31d3d1a20da44fcf SHA-1: c6200d7e8f2a4447654cdc324b94cc040e1beb04 SHA-256: 009ef1247e9c380cf264b0ce8bfbbac6269c4269a15bba374cd782f7447cff98
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body and embedded links suggest a phishing or scam attempt, likely to download further malware or steal information. The ML classifier strongly supports the malicious nature of this PDF.

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/wix?keyword=healthcare+domain+knowledge+pdf+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/wajisewexemumava.pdf
    • https://cdn.shopify.com/s/files/1/0437/4609/9349/files/78648904933.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/boxotewipiruwefozoligal.pdf
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/39328612829.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/computer_aptitude_questions_with_answers_for_bank_exams.pdf
    • https://static.usrfiles.com/ugd/b8c837_22369135569249eba7d94d423d4ad4c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a20e788625ca40f48a0a18d7e7271231.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/jikakifupuwurejaviwigegif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/95972840033.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/snow_treasure.pdf
    • https://cdn.shopify.com/s/files/1/0435/7157/6993/files/critical_path_method_network_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/mikes_rpg_center.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/lagu_bowo_caping_gunung.pdf
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/fulaposedorez.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/58875100103.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_off00005f96.bin
ede67b4db77ee46c3ecd074e83bc8d54821eaa71625558e27f4f9f43c007b6f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F96 5508 bytes
font_01_sfnt_off0000723e.bin
e29be42a1052e7167b03965eb76646ab5b7a37445a53b45562b21feca78b4230
pdf-font-stream PDF embedded font (sfnt) at offset 0x723E 9776 bytes