Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e60cf4c5a8afa1b…

MALICIOUS

PDF

44.1 KB Created: 2020-09-01 11:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e31d2fd29ac025cea718dfd350a93475 SHA-1: 2dafaae9dfcbcbaabd8b382e4d7fc3db5d72381a SHA-256: 1e60cf4c5a8afa1b87abbf90eaa4f927a39f902876463ecfa3b703b6ffa356d8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a prominent link disguised as a "Facebook stolen identity report". This link, when clicked, redirects to a known malicious domain (ttraff.club). The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious URL. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or redirection attack.

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=facebook+stolen+identity+report
    • https://cdn.shopify.com/s/files/1/0432/1784/6432/files/94699754704.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/81360937464.pdf
    • https://cdn.shopify.com/s/files/1/0430/0757/4179/files/67315562010.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7b557e2baab4bf5881c387455893c6a.pdf
    • https://static.usrfiles.com/ugd/10b11f_181e6261e1fe4e64abc0a0bbdf483156.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/supraventricular_tachycardia_ecg.pdf
    • https://cdn.shopify.com/s/files/1/0433/8686/3783/files/61022991047.pdf
    • https://cdn.shopify.com/s/files/1/0428/8079/4790/files/28971980254.pdf
    • https://cdn.shopify.com/s/files/1/0438/9647/1707/files/vovewijosetulosanegiloxot.pdf
    • https://cdn.shopify.com/s/files/1/0431/9952/9120/files/11562793746.pdf
    • https://cdn.shopify.com/s/files/1/0447/3107/2666/files/autocad_to_dwg_converter_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607a.bin
ad0fd97b1c395b4794c139cfadc79127a8665bc166488b93c6fbd9fbb39724f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x607A 5116 bytes
font_01_sfnt_off000071e1.bin
3c6d65853818d4439165969ad7b8fc11779c727201597e5cc953c588252eccbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x71E1 10404 bytes
font_02_sfnt_off00009577.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9577 4324 bytes