Malicious PDF — malware analysis report

Static analysis result for SHA-256 0515e27b768690f8…

MALICIOUS

PDF

38.2 KB Created: 2020-08-12 09:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a8197db2035ed52a02297b5879c90cc SHA-1: 06af22c399cbac797e1ee5403324542e6ed1fa35 SHA-256: 0515e27b768690f87337950a3bed4b183d7421fc5f25aa9e5de19aa1f9b7ae5f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links directs to a known malicious redirector infrastructure. The document's content and structure suggest it is part of a link farm designed to drive traffic to malicious sites, potentially 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=cayuga+lake+wine+trail+map+pdf
    • http://dofefatek.smoothtransformations.com.au/uploads/1/3/1/6/131637016/7864258.pdf
    • http://files.grandeprairierugby.com/uploads/1/3/1/4/131406412/vufiluxakezej.pdf
    • http://files.globalgoddessphotography.com/uploads/1/3/0/8/130814245/nurokanuwopalej.pdf
    • http://files.welcomingfm.org/uploads/1/3/0/7/130775098/8fbbec3883dd7e3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf
    • https://cdn.shopify.com/s/files/1/0434/6200/0806/files/98110776829.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/tunesobewojazed.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/action_research_sample_in_science.pdf
    • https://cdn.shopify.com/s/files/1/0436/0437/7757/files/alimentatia_in_sarcina.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/camino_frances_etappen.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/setafegopigawu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mikawewetekiwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0433/5989/5717/files/vutawa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5426/0633/files/pilot_hole_size_sheet_metal_screws.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_off00005841.bin
673b5d509d43ddb81f6a4f28351b17e10e43bb033177e61fd0bae6f46e61261f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5841 5348 bytes
font_01_sfnt_off00006a7b.bin
99f331b8c33c5cf8f061709f2755cfb91287e3c543f1cc84a28ca27964ee8d85
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7B 9864 bytes