Malicious PDF — malware analysis report

Static analysis result for SHA-256 145ffdb5407fb81b…

MALICIOUS

PDF

46.3 KB Created: 2020-08-30 14:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93bca87cd273aad1f75888130b84aa56 SHA-1: 33b0be17cf51828c87581a07bfdf3a410065da2d SHA-256: 145ffdb5407fb81be9689a7583f9ae56b953558ce2892d7a74b597bca319411e
154 Risk Score

Malware Insights

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

This PDF file contains a link disguised as a download for 'Gta vice city cheats free download f'. The link points to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links, many pointing to PDF files, suggests a link farm used for SEO poisoning or distributing 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.me/wix?keyword=gta+vice+city+cheats+free+download+f
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/078c79_23f314a16ae44defb17e8d5919fef75c.pdf
    • https://static.usrfiles.com/ugd/0779a3_d134ebbc144349819a26aaefd5e28c50.pdf
    • https://static.usrfiles.com/ugd/b8c837_dcbced4a0dc24b97ac1b3bec8faca0d8.pdf
    • https://cdn.shopify.com/s/files/1/0446/9784/5913/files/catalan_chess_opening.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/speak_now_full_album.pdf
    • https://cdn.shopify.com/s/files/1/0438/7795/7800/files/shankar_bhagwan_ke_naye_gane.pdf
    • https://cdn.shopify.com/s/files/1/0431/6459/8434/files/bodybuilding_workout_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f3b9c2cb1cd470db88665cd18bc7821.pdf
    • https://static.usrfiles.com/ugd/de65f7_9f053442e4fd491e8e3b1578985b68e4.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/skrillex_bang_a_rang_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/6579/3942/files/39889495357.pdf
    • https://cdn.shopify.com/s/files/1/0437/8345/4882/files/baviwifevajanugu.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_off00007754.bin
80d6f8e81578b9a8de52e98a2095d9c077cc9a2ed069af3ae2af8aafcb4aaec9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7754 5392 bytes
font_01_sfnt_off000089c1.bin
d3b72a8fe24209514434401f89fd749058c00c5cd1a3e36fc5fde5f611eb0ee1
pdf-font-stream PDF embedded font (sfnt) at offset 0x89C1 10144 bytes