Malicious PDF — malware analysis report

Static analysis result for SHA-256 1053f54e36b8a160…

MALICIOUS

PDF

38.6 KB Created: 2020-07-31 17:10:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03a9094d3c4948c0332c5bd4e35b9361 SHA-1: 26228f4e6733258e1a4702288337c716e0645886 SHA-256: 1053f54e36b8a160e0bdce746436fa8f5512105886fbc8d6bba71540f6cd6a2c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and references to emojis, suggesting a lure. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the final destination.

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.ru/pify?keyword=emoji+show+me+the+money
    • http://files.vicksburgartassociation.org/uploads/1/3/2/6/132695586/resatajalasujupebo.pdf
    • http://files.beautybyhippiemama.com/uploads/1/3/1/3/131381612/mabopibugu.pdf
    • http://files.westsideindustrialpark.com/uploads/1/3/1/6/131606284/tititozuwawo_zajan.pdf
    • http://files.sweethomeelegance.com/uploads/1/3/2/7/132740778/wolevo-pimulopak.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/4121/0024/files/72100951869.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/10016614213.pdf
    • https://cdn.shopify.com/s/files/1/0439/6272/8606/files/xomezagisonajukiwedamer.pdf
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/wabetiduwawasazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/33679277649.pdf
    • https://cdn.shopify.com/s/files/1/0430/6544/2455/files/poditikijuxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/xafaxed.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31995481059.pdf
    • https://cdn.shopify.com/s/files/1/0439/3094/3643/files/niwogosaferurito.pdf
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/66023836726.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/mikowifumodalunezez.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_off0000599c.bin
25568aeac4c97ef6e9355cfff24df1130a29daab2f64257c66cea4deded935cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x599C 4816 bytes
font_01_sfnt_off000069f4.bin
b5de87a73e610ce4535b83da076a7620da43670c587422a3cc51d3222cce168f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F4 10472 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.