Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1686fe477142b5a…

MALICIOUS

PDF

40.6 KB Created: 2020-08-25 11:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2091783629cc798e43037b6e90971dec SHA-1: 174181908fd8deab196123b6fb9619b7f94f3de0 SHA-256: c1686fe477142b5a3efe190456ae484eb652a2cfdf71046a12e644a8416c3fb8
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'odometer reporting' and includes the malicious URL, suggesting a phishing or scam lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector. The presence of numerous links hosted on Shopify and other domains, coupled with the 'PDF_SEO_LINK_FARM' heuristic, indicates a potential SEO poisoning or link farm strategy to distribute 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.com/pify?keyword=what+does+exempt+from+odometer+reporting+mean In PDF document text
    • http://xefulugog.emilyjaneart.co.uk/uploads/1/3/0/8/130814328/4524714.pdfIn PDF document text
    • http://misefiz.cambridgeintlschool.com/uploads/1/3/1/3/131383541/bced432f6.pdfIn PDF document text
    • http://zejebuwo.rolyart.co.uk/uploads/1/3/0/7/130738721/xeboz_dozonakar_mufusefakemes.pdfIn PDF document text
    • http://files.cookingnutritionseattle.com/uploads/1/3/1/0/131070178/retowi-fewiw-zepof-mokuvedeso.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/1/0438/9378/4728/files/3342554924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/nelovigulopovif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/dawigejofazuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1043/2929/files/feraxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3860/1379/files/parental_consent_affidavit_form_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4196/2646/files/92879040496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1732/0094/files/aladdin_ost_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1423/3000/files/coverkids_income_guidelines_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/wow_addon_folder_windows_10.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 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_off0000611d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 5504 bytes
SHA-256: 863fc6c112673a6631f25ca66f4eda3974db1758a5097491d866b3e89f350570
font_01_sfnt_off000073c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C8 9784 bytes
SHA-256: 3938c313e87be1c9a3b0d65523dd7335f55d55e38f5e442be3823176e8e54311

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