Malicious PDF — malware analysis report

Static analysis result for SHA-256 8324b59a290a8433…

MALICIOUS

PDF

43.2 KB Created: 2020-09-16 19:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87055b1e72f9cb6ab8e3097486b7dc51 SHA-1: 809b9cab0e8cc81fb1e1c319fe2fbd7c64beaa19 SHA-256: 8324b59a290a84332ea905f12615f65a769619c0e6536b8163cb057de0ddc86e
184 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, masquerading as search results for a product manual. One of these links, 'https://ttraff.me/wix?keyword=sony+digital+8+handycam+dcr+trv340+manual', points to known malicious redirector infrastructure. The document's structure and extensive link farm suggest a phishing or malware distribution attempt.

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.me/wix?keyword=sony+digital+8+handycam+dcr+trv340+manual
    • http://xexoti.meghanunger720.com/uploads/1/3/0/8/130813042/sozunijunidurat-dotojejivotuteb-reketi.pdf
    • http://lugojav.jhstoys.com/uploads/1/3/2/6/132682829/9befe9a9.pdf
    • http://files.slightlyaskewphotography.com/uploads/1/3/0/9/130969754/bedamuxisutakom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8872/4639/files/bomisutafewatozufigavabug.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/witukuvur.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/futafimunalijijesaxumevi.pdf
    • https://b22f93f4-9537-44cc-b82c-7fd59fcfcda4.filesusr.com/ugd/38eac1_ac17dd983b2349eab7faad8543c243c7.pdf?index=true
    • https://3133dd24-dc44-4b31-abac-aab132b276de.filesusr.com/ugd/3f0e57_83dbd0dcec5f41649be10e457351a1cd.pdf?index=true
    • https://38dcdb68-7bb8-4f70-9fd5-15120c4eb8de.filesusr.com/ugd/4cd51e_53394c6c131245788e5718b9a09fe441.pdf?index=true
    • https://e534e001-e81a-4ebb-a3fe-ac8b7ea90e46.filesusr.com/ugd/4329d7_62d76c3968ef44c4abcd04047594a486.pdf?index=true
    • https://c9ed5d50-750c-4d9e-89f2-aff53972c6c4.filesusr.com/ugd/154db6_8d5bc62694144a0497b77587991fba31.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/gidokulajanelixubem.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/xedesodiwutukep.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_off000060f0.bin
ada1bc7c30efb35bcfbcfb8bb4c3d3a87e012de7e1b623cc766bcb4d9c907003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 6028 bytes
font_01_sfnt_off0000755f.bin
abce1888a4ef7dfb79c822b118b54c6e1725410db8e7c2e1bd9c599359398bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755F 13768 bytes

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