Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f76b77e5ea63465…

MALICIOUS

PDF

36.1 KB Created: 2020-08-19 07:53:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 412652da1d4653a7643c751a8a613484 SHA-1: ef42ad2d183dabdcee42d14db039bb4cbe4859d7 SHA-256: 2f76b77e5ea634651c66ca1258170d5918eb865d676fc2b6d623bac31430b685
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. One of these links, 'https://ttraff.com/pify?keyword=guardian+speedy+crossword+answers', is identified as a malicious redirector. The document body contains garbled text and a reference to the malicious URL, suggesting it's part of a lure or obfuscation strategy. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=guardian+speedy+crossword+answers
    • http://fumonot.appighosthunts.com/uploads/1/3/1/4/131453284/siporareb-paletoriv-nifefemegerana-xerisibuwefiva.pdf
    • http://files.carolthoelen.com/uploads/1/3/1/6/131636807/3699016.pdf
    • http://files.enlaorillathefilm.com/uploads/1/3/1/4/131438071/buvenubarod.pdf
    • http://files.sammyspetfoods.com/uploads/1/3/1/3/131380641/vevizuvonutuvimopebo.pdf
    • http://maxegale.amistadschool.org/uploads/1/3/1/8/131856333/futituzawukukunizo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/zapokosufozilug.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1085/files/slope_intercept_form_definition.pdf
    • https://cdn.shopify.com/s/files/1/0437/5897/7178/files/bearing_catalogue_skf.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/12428705126.pdf
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/ganiwukidezedazodo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/80594504140.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/91299693668.pdf
    • https://cdn.shopify.com/s/files/1/0436/0113/3731/files/fumudikaxoni.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/vajurejiroxapoli.pdf
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/genetics_by_gardner_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5077/9295/files/88235143913.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_off00004e72.bin
acaf620d8d429aead8f24170e129d7f6746881d49f0a1c2a2edc018c3d3c2602
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E72 5260 bytes
font_01_sfnt_off00006081.bin
75d3af9545490fd55c954d4339b17f336c40c4dbfd1d02761faf48721c597a8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6081 10276 bytes