Malicious PDF — malware analysis report

Static analysis result for SHA-256 7724b1b485c73635…

MALICIOUS

PDF

40.4 KB Created: 2020-08-29 06:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8421505d85e149643e67e64a716323ce SHA-1: 6181b271717bf100b1e9a1131cb224b7aeec74a1 SHA-256: 7724b1b485c73635d19144a5b2aed3e27772557bde010b9eadfa748699e74f69
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.link/wix?keyword=film+theory+and+criticism+introducto', is flagged as a known malicious redirector. The document's structure and the presence of numerous links indicate an attempt to drive traffic to potentially malicious or unwanted content, likely as part of a phishing or scam campaign.

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.link/wix?keyword=film+theory+and+criticism+introducto
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_2f045f1f5c8348eeb9a5d24a90b7582d.pdf
    • https://static.usrfiles.com/ugd/b8c837_524050d7fdba46f89093032e57776a03.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2a6e93f746349e2a2f916509cd70a79.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/6462838782.pdf
    • https://cdn.shopify.com/s/files/1/0429/6232/1567/files/already_yet_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0429/3125/7510/files/angry_birds_go_apk_mod.pdf
    • https://cdn.shopify.com/s/files/1/0429/4977/1427/files/xulofatopepuximijenevavut.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c8fe72c7cba4dc697efdf1342edbf87.pdf
    • https://static.usrfiles.com/ugd/b8c837_515eaca7ad8d4dcc94d13af5426e78b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd37b76d2ec74490b5eea5eed756c6b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a1696d41ac94ba9a488f2d11346b43b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c78fa3d490242d9ad021d81dccf3c52.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_off0000612e.bin
45230d74d2ed92b7e2a595e9d0fa16deae7896ab6a4b60dc73a7b3b409de1606
pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 5236 bytes
font_01_sfnt_off000072d0.bin
1b20e21ea9b3828e81be98dd6ef8f53ca9dd388fe66846606d802dab1785b8c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x72D0 9980 bytes