Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba129e3cd8633f8c…

MALICIOUS

PDF

40.1 KB Created: 2020-08-30 10:29:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce177befde26a71a24af8df12226d894 SHA-1: d638717e8288772d61e0fee2a1d1c1c83456db00 SHA-256: ba129e3cd8633f8cfed5407906443eaf935d6b6844766c9aca1e07f55fcc7353
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link disguised as a download for 'ulead video studio full crack'. This link directs to a malicious redirector infrastructure, indicating a phishing or malware distribution attempt. The PDF also contains a large number of embedded links, many pointing to benign content, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for 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.cc/wix?keyword=download+ulead+video+studio+full+crack
    • https://static.usrfiles.com/ugd/067ecb_8129ce06ae854f079de59499eb8a4e8d.pdf
    • https://static.usrfiles.com/ugd/88a84f_126fec4da08049b0991d2aa525831ccd.pdf
    • https://static.usrfiles.com/ugd/b8c837_e340b4e0341b4c08a2f918c0e687e228.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff8fc0a5d54a477b934dfb077d2d202c.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e6a3929249e468a8f60bc57758d863e.pdf
    • https://static.usrfiles.com/ugd/4bb894_c84b024d5da146338eb6490fd2ececd2.pdf
    • https://static.usrfiles.com/ugd/c8a981_b653a6417f94451290fe822121e60876.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf2baedd52d342768e7f4a112c75b1cd.pdf
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/puxafisumazut.pdf
    • https://cdn.shopify.com/s/files/1/0434/6655/5558/files/movozikolowofakekuve.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/git_bash_windows_ssh.pdf
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/fusionner_plusieurs_avec_aperu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/carbon_footprint_introduction.pdf
    • https://cdn.shopify.com/s/files/1/0437/6667/7655/files/83584146215.pdf
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/4311183404.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d2f.bin
ab7ee49fb3a163958169ee1264574aa05c85cddca7346aff56f411a19ad12764
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2F 5232 bytes
font_01_sfnt_off00006f25.bin
36355a215ffb2e040c7ceb3254e818fed0133d103fdac1b030fe1451f1bd6e89
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F25 10680 bytes