Malicious PDF — malware analysis report

Static analysis result for SHA-256 1527b9d62e21c8e5…

MALICIOUS

PDF

41.8 KB Created: 2020-08-26 02:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d525a7244279270bee9a2bd8dc48bdeb SHA-1: 45e3e3589b9543f47d47a9989f9497052d84cf3d SHA-256: 1527b9d62e21c8e58ca04b19271b4f7e661d7e21ca27b584a8aed7e4276373eb
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary redirector pointing to 'ttraff.com'. This infrastructure is associated with SEO link farms and potentially phishing, aiming to direct users to a large collection of other PDFs. The document body itself contains a reference to the redirector URL, reinforcing the malicious intent. No scripts were extracted, but the link farm and redirector behavior are strong indicators of malicious activity.

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=display+scaling+windows+10 In PDF document text
    • http://files.cincinnaticorporateyoga.com/uploads/1/3/0/7/130776644/goboza.pdfIn PDF document text
    • http://files.continuumsofservice.org/uploads/1/3/0/8/130813526/zarupefekuwogizige.pdfIn PDF document text
    • http://wofipele.theexpatspeechie.com/uploads/1/3/1/3/131381241/rofisejeben-gogumefovot-zusuzuwolujenu-foromudovu.pdfIn PDF document text
    • http://pesonij.oliveandfinch.ca/uploads/1/3/0/7/130775934/muxurevasuju_joloxutopelaju_ladov_dosuvil.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/1/0438/2962/4992/files/10625184643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/27885174760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2796/9686/files/perifavitufokawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2917/2122/files/section_51_of_cgst_act_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/zolawuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4003/8298/files/49855987172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/lunajixawejeviderokigime.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_off00006533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6533 5532 bytes
SHA-256: 5e8a6993471492b888dea3b0abff6cdd3275c7e0f4c05800d50c508711490d81
font_01_sfnt_off0000782c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782C 10080 bytes
SHA-256: db3f916f77dd4543fb5c47c80a0893ae2074601af968e93514df25dea2c1421a

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