Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c2579865cf760e…

MALICIOUS

PDF

58.8 KB Created: 2020-08-14 00:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb691693c8a8c6e50261fe030ffe5785 SHA-1: 8059b773b1dc908a6b9c49db27b8467587491f6e SHA-256: 06c2579865cf760ebcae46ab2f38e422975fe55e6ea72e44d49a62b5cbca06db
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. It also exhibits a PDF link farm heuristic, indicating a large number of outbound links, many of which are to Shopify domains hosting other PDFs. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to direct users to potentially harmful 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=basler+electric+software
    • http://files.lyndonsga.com/uploads/1/3/1/4/131411539/lokazotize_gomuloliwezomel_sebubofebuketox_vetit.pdf
    • http://files.dunphyshandguntraining.com/uploads/1/3/2/6/132681566/d354c601d.pdf
    • http://files.heidylafleur.com/uploads/1/3/1/4/131437513/bedef-faguw-vokexiludituzu.pdf
    • http://files.colorblast5k.org/uploads/1/3/1/1/131164383/8578381.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/2749/5074/files/jijivijukedinaseveki.pdf
    • https://cdn.shopify.com/s/files/1/0434/1743/6327/files/korefonuveradokapofosow.pdf
    • https://cdn.shopify.com/s/files/1/0434/1317/6469/files/katofuvetux.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/sapuko.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2623/files/kidadibudodolijexinipe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/ponipofajoposaluseletufaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/43108156577.pdf
    • https://cdn.shopify.com/s/files/1/0432/3337/8459/files/microbiologia_bacteriologia_y_virologia.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3763/files/accounting_journal_entry_rules.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/26443172747.pdf
    • https://cdn.shopify.com/s/files/1/0432/2705/4237/files/22942848241.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_off00009fb9.bin
0825f01b5b2d1081467e0633d37143208ebad475831dc7305c4fbc025c3a1f50
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB9 5016 bytes
font_01_sfnt_off0000b0dc.bin
cfcac97035c894dd1012840ba7be8d625ed4088a150b45ae6c75c612d8fc180d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DC 14532 bytes