Malicious PDF — malware analysis report

Static analysis result for SHA-256 89176d6aabf68515…

MALICIOUS

PDF

42.1 KB Created: 2020-09-01 00:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d03b77d1185793eec280818c1a9b279 SHA-1: 25bea2002fd76ed80aadd1c12445451ac9f71da4 SHA-256: 89176d6aabf685150a3262e9b288daaf8f0fe9d73936bc505a5033aa9f966509
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract traffic. The primary malicious URL identified is ttraff.com, which is likely used to redirect users to further 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.com/wix?keyword=boboiboy+movie+2++in+english
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/d9d1f5_9aeb02e751ca449baf6cfbe67a791f16.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_9714e2c5e00c4ee4a74ad77823b681e5.pdf
    • https://static.usrfiles.com/ugd/b9801a_861c7bf2ac9f472f9ed65c80276a4c3c.pdf
    • https://static.usrfiles.com/ugd/0dcf4b_4e3619059a9a462c80f847b244a65299.pdf
    • https://static.usrfiles.com/ugd/de60da_de344bb7fb6241d4ac52f39c5af26b82.pdf
    • https://static.usrfiles.com/ugd/cc089a_f4338e6192844531b2fbcfb8387940b7.pdf
    • https://static.usrfiles.com/ugd/6f58fb_79d3620f695f4b6cb15cc972b8dfa740.pdf
    • https://static.usrfiles.com/ugd/b50c55_8f6290ca7c5e4566a75c4717914e9782.pdf
    • https://cdn.shopify.com/s/files/1/0439/8769/7822/files/80096033653.pdf
    • https://cdn.shopify.com/s/files/1/0435/3985/7563/files/23353893415.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6677/files/82518286527.pdf
    • https://cdn.shopify.com/s/files/1/0468/8746/9213/files/jurojokimusapebod.pdf
    • https://cdn.shopify.com/s/files/1/0432/6237/8139/files/plan_comptable_gnrale.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/xikexawafuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/cisco_esa_amp_ordering_guide.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_off00006485.bin
ecb4a60ceb9cd8e8944513657ae9337451a65c44a39633919d343a82417d3e3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6485 5276 bytes
font_01_sfnt_off00007669.bin
26fdf554e4e9769a8e15fd830df9219c2989ff3925a2a5678844ab090b287614
pdf-font-stream PDF embedded font (sfnt) at offset 0x7669 10976 bytes