Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fee6361cbf36634…

MALICIOUS

PDF

34.0 KB Created: 2020-08-22 22:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 880977ae3876199a843df26093ed9504 SHA-1: f2b1e5a56d8bd8eee3df2424414eef99f701be41 SHA-256: 6fee6361cbf36634fc5683ff3549fb4ad81d056d732213817f76273e3b2b8038
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that lead to a known malicious redirector, disguised as a sneaker sale. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to trick users into clicking malicious links. No scripts were extracted, but the presence of malicious URLs and the overall structure point to a phishing or scam attempt.

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.ru/pify?keyword=platform+white+sneakers+sale
    • http://files.jennifervonk.com/uploads/1/3/0/7/130738928/fukabuko-monurosubonok-jinokafameneme-mafuno.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/boverinowinozijibif.pdf
    • https://cdn.shopify.com/s/files/1/0429/6078/1475/files/fingerprint_attendance_system_using_arduino.pdf
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/mechanics_of_materials_riley_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/rs3_farming_patches.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/29647370192.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/refesenivasanakebagozop.pdf
    • https://cdn.shopify.com/s/files/1/0434/7520/6294/files/73273584101.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/23017304606.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/guvufimajoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/7931/8166/files/56057061375.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_off00004920.bin
ca6478830825e44165db9f1a46bb9f7fad3f8a7f34864c80aa1d23c8d4827bb9
pdf-font-stream PDF embedded font (sfnt) at offset 0x4920 5164 bytes
font_01_sfnt_off00005a95.bin
884563c16184357b6d47505e93ba42d517bce5d730da1f5268ac8393becc1912
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A95 9716 bytes