Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f3085f48f16f1e…

MALICIOUS

PDF

45.7 KB Created: 2020-08-20 08:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e29a14b86c719d73ca313fea75503aa SHA-1: c0a1e35262e76abe496a0e35e64444cf8387aaa0 SHA-256: 66f3085f48f16f1e4685b8f9b372fe94db101f4f7b62322f01954efb20d1e78d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body and heuristics indicate a lure for bypassing Android tablet Google accounts, likely a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the embedded links suggest an attempt to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=android+tablet+bypass+google+account In PDF document text
    • http://vijizij.michigancourses.com/uploads/1/3/1/3/131398591/6175997.pdfIn PDF document text
    • http://bamufogez.logancohumane.com/uploads/1/3/1/3/131382486/segedufobujosog.pdfIn PDF document text
    • http://lobib.eveningstreetharriersxc.com/uploads/1/3/0/7/130739267/5a128b6b36f7.pdfIn PDF document text
    • http://depid.organicpastels.com/uploads/1/3/0/8/130874123/bopepadebobofoz-dugevawi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/xerotamonekonuvujad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6968/5414/files/caterpillar_generator_maintenance_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/velirolavoxefulufogovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/tratamiento_del_cancer_gastrico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/1258810623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6952/9509/files/zozegosozovebitus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/dunozopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/62387083282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/silusedopumuvoxigodaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/ximugizugebepefuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/bernie_sanders_medicare_for_all_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/cara_membuat_cv_dengan_format.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EC 5352 bytes
SHA-256: acce13c0b18f53791f06b21f97d332b7575e5c7ffd477624496b0c8e476ad1be
font_01_sfnt_off00007829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7829 10540 bytes
SHA-256: 8ccc8499efa5ae24805cb36a025acdd78118e1ede74afb7f14093621690ff452
font_02_sfnt_off00009bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDF 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3