Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5de58ec7d25dbe7…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 05:28:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ef7ad8037f131675a46e451dccfa74a SHA-1: a7fc993fd55db78040f7a31e155afa2acfe36bb1 SHA-256: d5de58ec7d25dbe75d144d2b3e3436d192804a244c1f0f21bd829dc86d2c96ce
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL that promises a software crack. The document body, though heavily obfuscated, contains the same URL. This indicates a phishing attempt to lure users to a malicious site.

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.ru/pify?keyword=abbyy+pdf+transformer+12+crack
    • http://files.andrewmowen.com/uploads/1/3/1/0/131070845/97f54.pdf
    • http://files.shine360addiction.com/uploads/1/3/1/4/131407315/pedel-godanove-goxuwakojotobo-dudomuratoro.pdf
    • http://files.lilachbar-ami.com/uploads/1/3/2/3/132303099/xidisev.pdf
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/40251492999.pdf
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/72925810446.pdf
    • https://cdn.shopify.com/s/files/1/0436/1751/7725/files/nabesinimabebisavulasi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4748/3552/files/filef.pdf
    • https://cdn.shopify.com/s/files/1/0448/2190/5570/files/the_outermost_house_henry_beston.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4111/files/siu_lim_tao.pdf
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/41084838126.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/accreditation_letter_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/1261/1481/files/backyard_aquaponics_magazine_download.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/
    • https://cdn.shopify.com/s/files/1/0429/1097/4111/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006101.bin
cbdf1ca416db9f0fb9a7bf96bd3ea95134949682bb7e051af21a76bde36248e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 5748 bytes
font_01_sfnt_off00007485.bin
195ad28cb71b628742b0847a598240bc483a5618d1ee092c047dee17eb0bf59a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7485 10604 bytes

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