Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef4414d5ac165b5…

MALICIOUS

PDF

49.1 KB Created: 2020-08-08 11:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a253a5a6b8e6c49a89cbeb82941d4090 SHA-1: a869f6ed74b8b6f7b752ccd264ac530cabb0378a SHA-256: 5ef4414d5ac165b5f23b3a2f461adb82805d493fd21d81a8a91d8d0bbde3c6ef
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com). The document body, though obfuscated, contains the same redirector URL and several benign-looking Shopify URLs, suggesting a link farm or SEO poisoning tactic. The primary malicious link is https://ttraff.com/pify?keyword=pulse+oximetry+principle+pdf, which is likely used to redirect users to a phishing or malware distribution site.

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.com/pify?keyword=pulse+oximetry+principle+pdf In PDF document text
    • http://files.creativecircles.shop/uploads/1/3/0/7/130775384/xegorojesarorotagol.pdfIn PDF document text
    • http://files.fieldtripfever.com/uploads/1/3/1/6/131606782/5514551.pdfIn PDF document text
    • http://files.sandislandtennis.com/uploads/1/3/2/6/132682640/c5e89.pdfIn PDF document text
    • http://files.dogspeakllc.com/uploads/1/3/0/9/130969494/xetepazilarajatekin.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/1/0432/6827/6384/files/podirojunewixemumatisajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8393/0527/files/encyclopdie_du_chocolat_pierre_herm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2556/2791/files/29951753841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nunirisolifugonogebivaxez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/autumn_in_my_heart_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/37124666802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/linuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/happy_birthday_piano_jazz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8774/8519/files/aviculture_en_zone_tropicale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/raxerijotolananamidi.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
🗂 Part of campaign: pkpressurekleeninc.com 6 samples

Related samples 8

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_off0000823d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823D 5264 bytes
SHA-256: af1f2efcec775112036544704208f78ff732d8a2bef0d0fc4333754407477ef1
font_01_sfnt_off00009422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9422 10452 bytes
SHA-256: 3ee6abf163c0571370ef2b9631ebcfbc8b8deee0ef0e3fac94d4bd3995d578c2

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