Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbda96318b0e436…

MALICIOUS

PDF

67.8 KB Created: 2020-10-02 09:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 86a58ef7a3a83b1686af2c0393d1e6a9 SHA-1: 5d285747a176f159a7ea507f8d13456bd9766b49 SHA-256: 5bbda96318b0e4367171bb7dccefbdb881ac7123d7a5b38d0dcd1c2806b1d8cb
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, ggtraff.ru, which is likely used to host or distribute further malicious content. The document body, though heavily obfuscated, contains the same URL and a case study title, suggesting a lure. The presence of numerous links to Shopify PDFs, while many are benign, indicates a potential link farm or SEO poisoning tactic to increase visibility of the malicious URL. No scripts were extracted from this sample.

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://ggtraff.ru/pify?keyword=eharmony+case+study+competitive+advantage In PDF document text
    • http://files.thetrevortrophy.com/uploads/1/3/1/4/131453807/viguzoxedebarip-rajizenin.pdfIn PDF document text
    • http://files.sawmlian.com/uploads/1/3/1/6/131607712/vutejepasaratoz_nikan.pdfIn PDF document text
    • http://jewega.kendriataylor.com/uploads/1/3/0/9/130969265/mufusolanigamam.pdfIn PDF document text
    • http://gifetur.hillsboroupc.com/uploads/1/3/0/7/130776836/7770123.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6082/0133/files/hot_wheels_highway_35_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/7588/0348/files/mw2_aimbot_xbox_360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8337/8077/files/rationalism_and_puritanism_difference.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/35382711188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6883/5228/files/buxufobonozajewonowos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4877/8400/files/convoluted_universe_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/caffeine_blues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2541/1481/files/types_of_stretches_for_arms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0118/4931/files/xiwapigejonemopawafow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6cf6b4-1a28-498f-b89b-b0ace274ee80/78321589884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36d5e6c8-f27e-4f9c-8e07-6c762fb7e2b0/73992378997.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45fc767d-da3d-4f96-a71f-85e1d8b7a65d/55880710533.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC95 5456 bytes
SHA-256: 9d64e41aca92b057d12be510e1f815d5651daeb34ff6a8be21bfea12f14702c6
font_01_sfnt_off0000cf0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0D 10652 bytes
SHA-256: 07962dd597ee0f9fd9e605d0a9de3f220ad1c15aabac262c3b1cdc3d6f616686
font_02_sfnt_off0000f370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF370 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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