Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ce622fe465299b…

MALICIOUS

PDF

49.1 KB Created: 2020-09-04 11:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f8258d4cda884c12b21fec12d07e957 SHA-1: 3c38976aee2a11bb27d47200ca7a9063cc000820 SHA-256: 60ce622fe465299bf00421093ae4d2ae0c417d2be8236b4818e6d18596bd8b32
154 Risk Score

Malware Insights

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

The PDF contains embedded links designed to redirect users to malicious infrastructure, specifically identified as a redirector at 'ttraff.ru'. The document body, though obfuscated, suggests a lure related to passport annexures, aiming to trick users into clicking the malicious link. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points to a link farm or redirection strategy.

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/wix?keyword=passport+annexure+c+filled+sample+form
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/48516265627.pdf
    • https://cdn.shopify.com/s/files/1/0461/9983/2729/files/81023908285.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/likaxijobuse.pdf
    • https://cdn.shopify.com/s/files/1/0435/7134/7619/files/wetuxowajurorutifuzitelo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/python_distance_between_two_points.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/movozusuwa.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba3326000c4c431b9463f4676d64e347.pdf
    • https://static.usrfiles.com/ugd/fe83c3_b1cdf3f5f67448f0bf4e96eba41c2831.pdf
    • https://static.usrfiles.com/ugd/0f1814_39d247e5c0854f15a30044f0b4991081.pdf
    • https://static.usrfiles.com/ugd/1e32c2_69d700112b40455bbf46afbee8cc8021.pdf
    • https://static.usrfiles.com/ugd/4b7290_58d0a341dacb44de97c3ef98401a6e4c.pdf
    • https://static.usrfiles.com/ugd/7f614e_3e527c9421024131842d3aa43490d3c9.pdf
    • https://static.usrfiles.com/ugd/dcf9ad_bb48812866a04fd08c7865c7ed024502.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7a807859dc34f56aad9b7afb7e94efb.pdf
    • https://static.usrfiles.com/ugd/9f2514_7f723f654f684208b2a7ee97a1443431.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_off00006a82.bin
e050eacf711924f5fed73fdfdf810f95cbdeea0a7cd43754d481fde7d855c4b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A82 5372 bytes
font_01_sfnt_off00007cb5.bin
18c61f0a58362a1a031b3d385a8eef9712dc45cfbe9555d0e2fcb3c663c5eb79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB5 10568 bytes
font_02_sfnt_off0000a064.bin
b1615e29a4fe6c7320d553a30418b4fece26933a192be804fa4a6c1955e67a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA064 16068 bytes

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