Malicious PDF — malware analysis report

Static analysis result for SHA-256 4caee10ba463b02a…

MALICIOUS

PDF

45.2 KB Created: 2020-08-06 12:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b3133bfbcbdbf126d216ae84822d558 SHA-1: 4d059df2175ac1fbd23eefbf3ff6f329f020afcf SHA-256: 4caee10ba463b02ab36040c76a62c868cf0e12538c713b6d59d471fdeaa2a7d8
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.cc/pify?keyword=coffee+shop+business+plan+financials+pdf, which is likely intended to deliver a secondary payload or phish for credentials. The document body, though heavily obfuscated, contains references to financial documents and the malicious URL, reinforcing the lure.

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.cc/pify?keyword=coffee+shop+business+plan+financials+pdf
    • http://files.heal2change.com/uploads/1/3/0/8/130813866/8187153.pdf
    • http://files.airdriekarate.net/uploads/1/3/0/7/130775257/8881353.pdf
    • http://files.inthelaughterlocker.com/uploads/1/3/0/8/130873943/bef33409e29.pdf
    • http://files.virgiliumidrigan.com/uploads/1/3/0/7/130740444/rilopo.pdf
    • http://tisobu.saraelizabethtaylor.com/uploads/1/3/1/4/131409090/gikis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/59956102231.pdf
    • https://cdn.shopify.com/s/files/1/0433/0255/1716/files/58959129882.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/vomoradatozewitusavupam.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/tanosodesuxuwifesasapegit.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/34645067983.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0822/files/79760199928.pdf
    • https://cdn.shopify.com/s/files/1/0438/3227/9200/files/gumonatexukomumudawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/zoruxubusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2485/0842/files/15931009487.pdf
    • https://cdn.shopify.com/s/files/1/0430/7845/1351/files/gididugoxisitaroda.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073e9.bin
68a55c972a11f0d285fa9becb75a2ee2d63c4666fac669180aaff45eb7cc0bf4
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E9 5192 bytes
font_01_sfnt_off0000858a.bin
416749a0e6f9a65cf7c1f462fc4a52122e3251f081fad2cf2e57fbe52b215912
pdf-font-stream PDF embedded font (sfnt) at offset 0x858A 9956 bytes