Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a525cb17dd9438…

MALICIOUS

PDF

57.1 KB Created: 2020-09-05 02:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb41629383550278d6ad92dc545a99e1 SHA-1: 39727b5e8dd3f27a5ae2598dda3b16faeb6974df SHA-256: 03a525cb17dd94388fd11ecdf7aefbed4bfe28bc2d07ce11b6d8eb0e04971ff8
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for distributing malicious content or phishing pages. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of numerous external links in 'PDF_SEO_LINK_FARM' strongly suggest malicious intent. The embedded URL 'https://ttraff.me/wix?keyword=adobe+acrobat+reader+9+free++english' is likely a lure to download a malicious payload or phish for credentials.

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=adobe+acrobat+reader+9+free++english
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/powulazojukesoreleburubo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5482/5621/files/lojeviboxarov.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/kokupovixisur.pdf
    • https://cdn.shopify.com/s/files/1/0448/0781/5334/files/mckay_building_construction_volume_4_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/5275/9200/files/93511877591.pdf
    • https://static.usrfiles.com/ugd/b58d21_57d4f4403e014020a258a83bd7053653.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/konewab.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/new_super_mario_bros_wii_iso.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7243/files/lil_uzi_the_way_life_goes_mp3_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/airline_commander_cheat_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/bexavajibefazagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/85452950867.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_off0000a1da.bin
f34c45416fcfe5c18fb7c6208a563214d84164cabcb567ec9c6018a88d490965
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1DA 5568 bytes
font_01_sfnt_off0000b4bf.bin
02a56f9ae1372f7f290c89fa5d9b4e5e1f3368468ac32118f0dbe289dc1b4dad
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4BF 10236 bytes