Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e365e54e9d29f9…

MALICIOUS

PDF

74.8 KB Created: 2020-08-18 21:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 107e6b325c5f9fc513c06846997fcf30 SHA-1: c50c3ab1b8857364012d88931b6ae8bd1a4e86e6 SHA-256: 60e365e54e9d29f964eec6061f7515f583abc5d27ccae7d1e5a95df176c90382
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text related to 'Crystal reports for visual studio 2013 license' and a URL that appears to be part of a link farm designed to attract search engine traffic. The primary malicious URL is https://ttraff.com/pify?keyword=crystal+reports+for+visual+studio+2013+license, which is a known malicious redirector.

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.com/pify?keyword=crystal+reports+for+visual+studio+2013+license
    • http://tewev.studioviemen.com/uploads/1/3/2/7/132740649/vipulod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/59767063116.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/avneet_kaur_song_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/9970957232.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/67498752001.pdf
    • https://cdn.shopify.com/s/files/1/0456/4464/4519/files/macromolecules_carbohydrates_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/capacitive_sensors_design_and_applications_larry_k._baxter.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/37285724290.pdf
    • https://cdn.shopify.com/s/files/1/0451/0292/3939/files/tabituxugatizibur.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/vajerigi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/83368819938.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/difference_between_discharge_and_acquittal_under_crpc.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/jedoxus.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_off0000dac6.bin
ceca4e665ab4e9d02649ff4bf6ddfe8253be949957542bc729321033e2ede52e
pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC6 5704 bytes
font_01_sfnt_off0000ee55.bin
0970f5a06f3125ba43b550798a939eb7df0eda0fcbb5a01b34e4245e7821f4a5
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE55 15296 bytes