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)
MD5: 3e29a14b86c719d73ca313fea75503aa SHA-1: c0a1e35262e76abe496a0e35e64444cf8387aaa0 SHA-256: 66f3085f48f16f1e4685b8f9b372fe94db101f4f7b62322f01954efb20d1e78d
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, `https://ttraff.cc/pify?keyword=android+tablet+bypass+google+account`, which is flagged as malicious. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is designed to redirect users to harmful content.

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=android+tablet+bypass+google+account
    • http://vijizij.michigancourses.com/uploads/1/3/1/3/131398591/6175997.pdf
    • http://bamufogez.logancohumane.com/uploads/1/3/1/3/131382486/segedufobujosog.pdf
    • http://lobib.eveningstreetharriersxc.com/uploads/1/3/0/7/130739267/5a128b6b36f7.pdf
    • http://depid.organicpastels.com/uploads/1/3/0/8/130874123/bopepadebobofoz-dugevawi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/xerotamonekonuvujad.pdf
    • https://cdn.shopify.com/s/files/1/0432/6968/5414/files/caterpillar_generator_maintenance_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/velirolavoxefulufogovi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/tratamiento_del_cancer_gastrico.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/1258810623.pdf
    • https://cdn.shopify.com/s/files/1/0433/6952/9509/files/zozegosozovebitus.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/dunozopu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/62387083282.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/silusedopumuvoxigodaj.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/ximugizugebepefuze.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/bernie_sanders_medicare_for_all_plan.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/cara_membuat_cv_dengan_format.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 3

Files carved from inside the sample during analysis.

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

Open this report in the interactive analyzer, or submit your own file for analysis.