Malicious PDF — malware analysis report

Static analysis result for SHA-256 112312818b9eac12…

MALICIOUS

PDF

49.0 KB Created: 2020-08-31 20:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 060a1eb74a92b373e66e0db615668c2d SHA-1: ff46f0ee6a31785f25b1d538d243e4920af383dc SHA-256: 112312818b9eac1210380b26ee054557638d013ca7a17711ce8ff8c643aad649
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a significant portion of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=bsc+full+form+in+medical'. The document body, though heavily obfuscated, also contains this URL, indicating its importance in the lure. No scripts were extracted, but the presence of malicious redirector links strongly suggests an attempt to lead the user to malicious content.

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=bsc+full+form+in+medical In 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/1/0429/2152/5407/files/80849217954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/pefijatemalalepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/interim_report_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5724/9430/files/nuvogiwamidotof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8667/6117/files/vowixulege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/before_you_accuse_me_eric_clapton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/shadowing_japanese_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/auction_bidders_guide_nsw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2700/4577/files/16647733481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/dnd_exp_levels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/logukatidelafilep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/baterexigukekakono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/partitura_carruagem_de_fogo_piano.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_off00006b4d.bin
026c5ed9dffa11c8e30fd877382bd63558151c5494ffc40aef25e30f5526ac27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 5020 bytes
font_01_sfnt_off00007c2f.bin
605c59a8d7c5aacee1d79057c67953b1b45c59afee2a59e53d4e13feac57691a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2F 14528 bytes
font_02_sfnt_off0000a938.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA938 4324 bytes

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