Malicious PDF — malware analysis report

Static analysis result for SHA-256 e203cd596e18210a…

MALICIOUS

PDF

48.6 KB Created: 2020-08-02 21:48:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e13e58a0e0b5c55952d2f42ae37942a8 SHA-1: f125edbf7888674d181eedb75778ff088b79e303 SHA-256: e203cd596e18210a81ed56a4b37a4508b971b322e5be6ef6795f5f84e70ee755
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=babysitting+cream+games', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify and other domains, indicating a link farm designed to obscure the ultimate destination and potentially evade detection.

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/pify?keyword=babysitting+cream+games
    • http://files.leeluummakeupartistry.com/uploads/1/3/1/3/131381204/6495412.pdf
    • http://files.knightsschool.com/uploads/1/3/0/7/130775977/530428c3937627b.pdf
    • http://files.aloveliclass.com/uploads/1/3/1/3/131380354/pifijiraxa-bogusaxe.pdf
    • http://files.cherylbrowndesigns.com/uploads/1/3/0/8/130874381/kibuwopex_weluxili_vutabuk_zumoro.pdf
    • http://files.speechmodification.com/uploads/1/3/0/7/130739570/siwelegipoluwamu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5984/6051/files/wakamejulavujowidif.pdf
    • https://cdn.shopify.com/s/files/1/0435/3916/9429/files/39898449456.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6818/files/kanaxonixizotig.pdf
    • https://cdn.shopify.com/s/files/1/0437/0009/3083/files/67022765632.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3941/6732/files/lubelusukupexered.pdf
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/57698216538.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/24276840050.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5510/files/75916974887.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/pokikivabimutoseruzumugo.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080a0.bin
6370cde3fa14930b468a76d08ab96b239d99860a463f680bf7638d3a9358a7ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x80A0 5380 bytes
font_01_sfnt_off000092e6.bin
8e42b003fff8377c5a2f9c7a516459768327bd9a242179978e66221e7d8ad258
pdf-font-stream PDF embedded font (sfnt) at offset 0x92E6 10332 bytes