Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d9dd99173b8aa1…

MALICIOUS

PDF

43.3 KB Created: 2020-08-21 06:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 718437fe045df91df723ec0221b388a3 SHA-1: d9f9bc52c218130949e4aaf82511ec207380523e SHA-256: c3d9dd99173b8aa1cd986a4e2664c80832a608763b4482de6f463ffef463b739
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=android+9+split+screen+samsung+s9'. The document body, though heavily obfuscated, contains keywords related to Android and Samsung, suggesting a lure to disguise the malicious intent. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning tactic to distribute the malicious content.

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.ru/pify?keyword=android+9+split+screen+samsung+s9 In PDF document text
    • http://files.wakingupwilder.com/uploads/1/3/0/7/130775014/2294534.pdfIn PDF document text
    • http://kotimefid.colonnadeqatar.com/uploads/1/3/1/8/131871479/5272997.pdfIn PDF document text
    • http://zinori.arnoldcameraclub.com/uploads/1/3/0/7/130738732/zosinete.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/jubolij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6383/5814/files/durakapawawefetorupupijug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/definisi_alkalinitas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3254/1344/files/bwv_846_prelude_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/jorefatorisodupagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/wizopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9715790575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9932/3558/files/kivuzewadujetekoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/5696/0412/files/hamilton_beach_roaster_oven_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/vejotoribelotebodol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/54845148376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/foxefew.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 5540 bytes
SHA-256: 966d6a1077f40ed3e4726e90e30ab85ee05144d736ca17219a2edeb3f1b6a469
font_01_sfnt_off00007e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E50 9852 bytes
SHA-256: 78c83345305b293c02f6facb46fe4290a099944b841f3f5d753c3c780473973f

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