Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6e0fec5f4e0912…

MALICIOUS

PDF

29.6 KB Created: 2020-09-24 00:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d6f47ccf52b15ec6cc5c4db6dce208a5 SHA-1: d6781ef5bdbdd4a70a2b6cb78ef9d3b0c5a6b58e SHA-256: fa6e0fec5f4e0912f438998f6c7c5a3d8f22d5a0ee2e3620f68f2f7117cd8094
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The primary link directs to a redirector service, suggesting an attempt to obscure the final malicious destination. The document body, though partially corrupted, contains text related to an 'Aleko gate opener manual' and embedded URLs, reinforcing the lure to external content.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/wix?keyword=aleko+gate+opener+manual In PDF document text
    • http://tifiba.consciousazine.net/uploads/1/3/0/7/130738890/bopunobog_lizogugonizak.pdfIn PDF document text
    • http://xexedar.whidbeyworkingartists.com/uploads/1/3/1/3/131379724/bozonazawupil-fazororoluwe-lezexuga.pdfIn PDF document text
    • http://noxuv.realjoana.com/uploads/1/3/0/7/130775471/55b9965.pdfIn PDF document text
    • http://files.scproperties.info/uploads/1/3/0/7/130776075/semomebawej.pdfIn PDF document text
    • http://puzuz.empoweringyouthusa.net/uploads/1/3/2/7/132740594/6886673.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://16f43a47-bd75-4992-8425-360cc0aa5423.filesusr.com/ugd/49be48_39c53effdc734e46ae8fd4b03a5c70f0.pdf?index=trueIn PDF document text
    • https://dadf7817-ac3a-4695-ac60-abcccb541f39.filesusr.com/ugd/5f226e_67fa110186ad45bb9c15aaca6cedb9be.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6449/1161/files/i_am_zlatan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/reading_passages_with_blends_and_digraphs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/rawozaselofuvowafavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1293/8152/files/62413460730.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CC5 5012 bytes
SHA-256: 8b80290f0d58ab4138360209c5eb0acd46079165a06cde502d3adb87f058015e
font_01_sfnt_off00004dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC5 8272 bytes
SHA-256: 7f1636ac615dec3f06a88351d7fdd1f10fefbde69b8821c51e9fe85b271800d2

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