Malicious PDF — malware analysis report

Static analysis result for SHA-256 06916e0c380664a7…

MALICIOUS

PDF

40.9 KB Created: 2020-08-25 15:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1ce49cdaa1642049b223354d9f2504d SHA-1: f1c7c5f0778af680e99bebbe8fe06606358acae1 SHA-256: 06916e0c380664a76b5c74054d7f0c56467c4c2148617191617b9b450c6bd4e8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, appears to contain the same lure URL. The presence of a link farm and a known malicious redirector strongly suggests an attempt to lead the user to a malicious site, 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.com/pify?keyword=salesforce+lightning+for+outlook+implementation+guide
    • http://files.ssls-eg.com/uploads/1/3/1/4/131453894/kezedadurib_jasinatopisaxes_gilabit_doduxit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/bruchgleichungen_aufgaben_klasse_9.pdf
    • https://cdn.shopify.com/s/files/1/0431/4031/7335/files/37407486586.pdf
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/xifiverowajukuvo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/ces_2020_tech_trends.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerisorajomowuba.pdf
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/30924415358.pdf
    • https://cdn.shopify.com/s/files/1/0447/8438/6199/files/signo_de_lasegue_y_bragard.pdf
    • https://cdn.shopify.com/s/files/1/0434/3391/8616/files/budozef.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/muguvomiketogu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/gcra_bursary_application_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4166/files/50188979785.pdf
    • https://cdn.shopify.com/s/files/1/0439/9602/0894/files/guia_ceneval_universidad.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_off00005fbf.bin
947e11be159c68501d6fc16ccf4faa28511a161d382db45607812f688e9487b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBF 5736 bytes
font_01_sfnt_off0000730d.bin
f392eed697b07148f98180ceec514fcee12515dc0f74dd3ed5344bdffe1e2004
pdf-font-stream PDF embedded font (sfnt) at offset 0x730D 10376 bytes