Malicious PDF — malware analysis report

Static analysis result for SHA-256 152d582bac220185…

MALICIOUS

PDF

40.5 KB Created: 2020-09-03 04:59:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2ff608aaeb5f84425e3b7330493df5e SHA-1: 0bcf67fa6bafd48d49a0b1519d5766ccef7bd472 SHA-256: 152d582bac2201851efd85333d5a239576f94298e39f62e5e0bbd1785a7066bf
154 Risk Score

Malware Insights

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

This PDF contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL, https://ttraff.cc/wix?keyword=album+videos+songs+free++in+tamil, is flagged as malicious. The document's structure and the presence of numerous external links suggest an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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.cc/wix?keyword=album+videos+songs+free++in+tamil
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/6fd45c_4d0ed140d9ae4f9198384ae404af87fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_51d76e8191ad4e54acb8116c35b0e87a.pdf
    • https://static.usrfiles.com/ugd/c8df25_93747db8329b4e749481c3de0e3f6d99.pdf
    • https://static.usrfiles.com/ugd/b8c837_15d5a2bcce5648acb1eb6306d6485cc6.pdf
    • https://static.usrfiles.com/ugd/52b593_67ea3765da7b48d4a72f070d7f1a5631.pdf
    • https://static.usrfiles.com/ugd/9219f8_3b463407ee3048f08b33160924183ccc.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_8114341f1c19430ca3966f6d5a8472c6.pdf
    • https://static.usrfiles.com/ugd/9904c2_b6eecf01cb374e7db7268c7e9a37ccd6.pdf
    • https://static.usrfiles.com/ugd/b8c837_63247470740942c4ba67028261931cfb.pdf
    • https://static.usrfiles.com/ugd/d54300_b5ee63e2be914fab9b1f82e7f7041390.pdf
    • https://static.usrfiles.com/ugd/6116da_d08b8632050d4bb4895d5ca47eb2a965.pdf
    • https://static.usrfiles.com/ugd/173616_f99ef61d2ada42d68c293aa216476463.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/restaurant_floor_planning.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/72676067309.pdf
    • https://cdn.shopify.com/s/files/1/0428/2197/6220/files/afsar_movie_all_song_video.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_off00005e63.bin
94f5ab3630b7f11e502e3d0fd21ec8c6089e8285269e0f932c51fcc7467dd6d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E63 5416 bytes
font_01_sfnt_off000070bd.bin
5fe3013ac703a0c5910e2b8bee8b9b9b78e27a6e4635df6237acfc15966cf3e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x70BD 10840 bytes