Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef90da064cfdae4…

MALICIOUS

PDF

153.5 KB Created: 2020-08-01 19:35:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65cd8cd00597257ffeea69d9c1e0b49c SHA-1: 49ab22fb6de0441213488ce1a28ec2091d6a218a SHA-256: 0ef90da064cfdae45654b9ef6a0e4c3e914e87f02c9938b851f3c4671ec37712
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL `https://ttraff.ru/pify?keyword=print+new+line+python+3` is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • 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=print+new+line+python+3
    • http://files.ianburtphotography.co.uk/uploads/1/3/2/6/132696483/mapitazituferarerow.pdf
    • http://files.legallysweettreats.com/uploads/1/3/1/3/131398419/e4cc46235.pdf
    • http://files.inkandoakdesignco.com/uploads/1/3/1/3/131379060/gozobefupul_jowijemikarosu_mejatalowobeniv_zileruzipexuze.pdf
    • http://files.fournierfit.com/uploads/1/3/2/7/132740499/lerenufewemol_kodunukura_gabep.pdf
    • http://files.crystincomputerscience.com/uploads/1/3/2/8/132814239/9fba0606257b6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7763/1126/files/puwenasedixa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/zowez.pdf
    • https://cdn.shopify.com/s/files/1/0429/9168/1699/files/31927504739.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/40368501550.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/76353817288.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2967/files/sea_doo_owner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/89341159920.pdf
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/maxekalovukarim.pdf
    • https://cdn.shopify.com/s/files/1/0429/4164/4963/files/26541095203.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86526592296.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/wiraguguvusewazumo.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_off000212db.bin
70b1d4148edbc8e9e4884e047471e70f1baa7360389b530b83f41a1049f29304
pdf-font-stream PDF embedded font (sfnt) at offset 0x212DB 4876 bytes
font_01_sfnt_off0002238b.bin
f30dd5d6c5822b16fa80c79671d12afc60497a33f3be2817f0da20f9f52aa7cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x2238B 16672 bytes