Malicious PDF — malware analysis report

Static analysis result for SHA-256 180b0c9439326216…

MALICIOUS

PDF

48.4 KB Created: 2020-08-23 02:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b9aee6e8076d1383e5157a485422453 SHA-1: 4a9d4efb5815f2f9746c5540e364feaf63cf5d75 SHA-256: 180b0c9439326216f090696e51a62cadb95c36ab0ad8db4ffe645104c52ccbc5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.ru/pify?keyword=ethernet+switch+ic+datasheet. It also exhibits characteristics of a PDF link farm, with numerous embedded links. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a deceptive lure. No scripts were extracted, but the presence of embedded URLs and the redirector link strongly indicate a phishing or redirection attempt.

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=ethernet+switch+ic+datasheet
    • http://lekikikes.jrpaddon.com/uploads/1/3/0/8/130873851/kuguxil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/2139/4343/files/sunurisamoverulofigipip.pdf
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/papibibazumezotibameloxoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/allianz_arena_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/70129802270.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4338/files/baltimore_classification.pdf
    • https://cdn.shopify.com/s/files/1/0429/0173/3542/files/81591450074.pdf
    • https://cdn.shopify.com/s/files/1/0435/2779/8944/files/lasawugosoxupesotura.pdf
    • https://cdn.shopify.com/s/files/1/0431/8792/9245/files/tuxisupumuruzosokofazoves.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/journal_of_adsorption.pdf
    • https://cdn.shopify.com/s/files/1/0460/1407/0945/files/10752853362.pdf
    • https://cdn.shopify.com/s/files/1/0436/5526/6457/files/az_900_certification_dumps.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000672c.bin
43c79c315e0e0c72f9f3145ac69181c143cf724d2fc12d4844f5bdcbdef75554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x672C 4724 bytes
font_01_sfnt_off00007734.bin
1e2fd1020fe7b4fa8446ce67652f3a6bba8c6b9decd3654cb3f7beebd2f23a02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7734 15556 bytes
font_02_sfnt_off0000a686.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA686 4324 bytes

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