Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e46331ae7d3866…

MALICIOUS

PDF

39.4 KB Created: 2020-08-30 22:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46fcccf4e4684296748ec241f122d1b3 SHA-1: b22489fb5280a6192bb3f3b9dbe1d9f0fc41fe1e SHA-256: 67e46331ae7d386624bee93c8fb406d9a467dbdf1102447377f76d3abd359be3
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.club/wix?keyword=portal+to+the+last+millennium, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links to PDF files, suggesting a link farm or redirection scheme designed to lead users to malicious content. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection 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.club/wix?keyword=portal+to+the+last+millennium
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/cc10e7_9047885582d7483fb04a987d4dc05130.pdf
    • https://static.usrfiles.com/ugd/b8c837_b89d1339c7be4540bef989657ddeba12.pdf
    • https://static.usrfiles.com/ugd/63d3ad_799bfd6642704c9bbbfc77c2199ef0e8.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c5f3da769b44a55b7a000acd9b8f06c.pdf
    • https://static.usrfiles.com/ugd/b8c837_5746a26cc9f74eae8e1b5bb451138be4.pdf
    • https://static.usrfiles.com/ugd/5de1df_ebced328404a4063bac1c19b902560d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f958df7d2094f449ef003b46a93c0b4.pdf
    • https://static.usrfiles.com/ugd/086daf_4197675f7c9645afb22f2cdf083f8b6e.pdf
    • https://static.usrfiles.com/ugd/09c3c7_9495158fec2e415bacb49674d9e4c4f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e8d41fffb954a07975dc57a1c859989.pdf
    • https://static.usrfiles.com/ugd/f0f215_22e4d5e5487741898edc2c95a032f771.pdf
    • https://static.usrfiles.com/ugd/4d6844_8bd0ed24428d472b8b3cb36fff4722f4.pdf
    • https://static.usrfiles.com/ugd/8b4172_9a6c8988a518437f9f1f3ee5d7520475.pdf
    • https://static.usrfiles.com/ugd/8d57bd_1c506eee7e1b4a7c9615a6cfdc57931a.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004aae.bin
a4329dfab486d0039095de36892a5b6dc91df5b923a8cded064a146fbf8ddc1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAE 4928 bytes
font_01_sfnt_off00005b40.bin
bda3c7a8bc227b15e5174f86475e5116eeec528844240006396d48e9fde41e66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B40 9564 bytes
font_02_sfnt_off00007c43.bin
e5cfcb65454622883407fb93d4f5ec4274a84d253a07a77e3e12c2003349a76f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C43 16036 bytes

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