Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f04de82e87a4a03…

MALICIOUS

PDF

40.0 KB Created: 2020-08-25 01:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ed60a66dbc5255e30b820a7efbf16dd SHA-1: be2c4f0cf279180200049cba1a0cd408265fb9fb SHA-256: 6f04de82e87a4a03f8fbf155ae1a48fd959a2ad3db5ef58ee6a3e3c674fe459f
162 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to SEO-optimized PDF files, but one critical link redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=grade+12+entrepreneurship+textbook+pdf, which is flagged as a malicious redirector. This suggests the document is part of a link farm or phishing campaign designed to lead users to malicious sites.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=grade+12+entrepreneurship+textbook+pdf
    • http://veroxa.ernst-arch.com/uploads/1/3/0/7/130776132/b881083659.pdf
    • http://pakeki.evangelicalhistory.org/uploads/1/3/1/4/131407498/jimivesupale.pdf
    • http://files.bridgescounselingservices.com/uploads/1/3/0/8/130874125/3121761.pdf
    • http://files.grendylbayn.com/uploads/1/3/2/7/132710601/bemexugulu-fasoxojijavosek-nekerav-batuj.pdf
    • http://files.arielzylberman.com/uploads/1/3/1/0/131070051/jepatopo-dalasuripol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6576/9113/files/68864012368.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/26644107804.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/xevapegefozunoke.pdf
    • https://cdn.shopify.com/s/files/1/0436/6077/1481/files/breast_cancer_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38461358607.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/jelewiwevedovobi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0209/9873/files/97883124274.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0994/files/guritugal.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/fajumutalif.pdf
    • https://cdn.shopify.com/s/files/1/0449/7958/5192/files/4537004163.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_off00005e03.bin
d9722bf42b4ca6f61e48b8daeb2ab880febf9511797849eb6dddcf2cd3a5f77e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E03 5584 bytes
font_01_sfnt_off000070fb.bin
20d18bbcca7d56da76fa2795d8855c906d8ee5e3c554274ad60bdc12db1dbf72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FB 9900 bytes

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