Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f47e2fbe96ba771…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 01:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e31d1b37361d5777a82bbab72d7b37d SHA-1: 76a41f88a9c46a7d24167462d5c97bece591660b SHA-256: 6f47e2fbe96ba7714ae8c6f96f0fc06e6e7265ec37b3f97f52f3f2a898aac04d
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector link, indicating a phishing or scam attempt. The embedded link `https://ttraff.com/pify?keyword=microsoft+activesync++win+10` is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to redirect users to potentially harmful content, likely as part of a phishing campaign.

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=microsoft+activesync++win+10
    • http://files.sarahplatenius.com/uploads/1/3/2/7/132712136/bizisavikol.pdf
    • http://files.tiongtan.com/uploads/1/3/1/3/131379678/dumur-tupulenula-komeveru-rurama.pdf
    • http://rebuw.wisdomoftaoism.com/uploads/1/3/1/4/131453133/puvuzesib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/wogeputupatiwigaza.pdf
    • https://cdn.shopify.com/s/files/1/0432/5199/0691/files/pazobeposumeregino.pdf
    • https://cdn.shopify.com/s/files/1/0440/8868/8790/files/rulenolu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/chemistry_lab_equipment_list_and_uses.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/58740423551.pdf
    • https://cdn.shopify.com/s/files/1/0440/6237/6101/files/mapa_metro_praha.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9667/files/6104737454.pdf
    • https://cdn.shopify.com/s/files/1/0448/9605/9547/files/nikola_tesla_biography.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/apostrophe_of_possession_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/8879/6065/files/33015637942.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/aleatory_contract.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/kadinemimo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7752/3861/files/human_anatomy_9th_edition_marieb.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_off00005ef0.bin
fdd9a0a812685ee73deddf1922282d6b18a8afb784dba8d9e93c1a04bd873335		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF0 5296 bytes
font_01_sfnt_off00007127.bin
233dbbad24cb5428f5a1d8a2f50f86d2faaba95298cce0c26d43e1192e6aa4ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7127 10172 bytes

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