Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf94ced4494d387…

MALICIOUS

PDF

43.7 KB Created: 2020-08-11 17:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d6230445b7848bafe069a2948f5c999 SHA-1: a1b35e4e2c0cac3a95cf494615622b656671cf44 SHA-256: fbf94ced4494d387670798ad006613bf293de6a8a592f7d7f4d90840d9f5e2cc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high density of external links, many pointing to Shopify domains hosting PDF files, a technique often used for SEO poisoning or link farming. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting the document's purpose is to drive traffic to this malicious site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/wb?keyword=national%20geographic%20magazine%20november%202019%20pdf In PDF document text
    • http://files.upperwoodacademy.org/uploads/1/3/0/8/130874379/5508010.pdfIn PDF document text
    • http://difenobu.wherechangeiscertain.org/uploads/1/3/0/7/130776407/5746772.pdfIn PDF document text
    • http://ranapodes.loblollylabradors.com/uploads/1/3/1/1/131164250/5394324.pdfIn PDF document text
    • http://files.salon-alphonse.com/uploads/1/3/1/4/131452902/50671.pdfIn PDF document text
    • http://files.han1image.com/uploads/1/3/0/7/130776326/dabul_lezaxe_bedodadupa_vubevexujuzuji.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/1/0437/8768/1954/files/95561037748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2129/3974/files/4696540620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7759/9383/files/budalujoporisutizagirome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3339/5351/files/zutalefisew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/45204995279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1775/7095/files/69196207905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/46881822555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/wafibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/3668254731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/fantasia_models_mya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/wugazajapelupejet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4691/0624/files/ripowelokegoredifetaliju.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_off00005a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A68 5880 bytes
SHA-256: 8d5c32e9c78dbf94ec41617bcd3720eba5cf5a8c552e7bb4d82a99c67c751484
font_01_sfnt_off00006e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4C 10836 bytes
SHA-256: 2173797ff401a1f19bb3b8694c9dc4b2ab39535bba477845b336b98f15c9ef89
font_02_sfnt_off0000934f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c