Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c9043196bff32c…

MALICIOUS

PDF

40.8 KB Created: 2020-08-09 17:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dbcfbc0dd4c3516e6518ade75c5d3ad SHA-1: 4aeac8f3a0d7aa9ccf682695ddf5e421db33fc78 SHA-256: c8c9043196bff32c678f2f2a058bc3a35305c3ef772420ac926db4476590b84e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for users searching for specific book PDFs. The presence of numerous other PDF links, many hosted on Shopify, suggests 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.com/pify?keyword=barbara+ann+brennan+books+pdf In PDF document text
    • http://files.jenniferroseheath.com/uploads/1/3/0/7/130739883/rudunozewi.pdfIn PDF document text
    • http://files.elliehutchison.com/uploads/1/3/0/9/130968921/19df7cc4.pdfIn PDF document text
    • http://nusorup.groveparklife.com/uploads/1/3/0/8/130874493/e5a3c0a.pdfIn PDF document text
    • http://files.kathrynyarbrough.org/uploads/1/3/1/3/131384400/dejepadag.pdfIn PDF document text
    • http://files.friartucker.com/uploads/1/3/0/9/130969873/xoxumabagekumijisixa.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/1/0431/5149/1236/files/96525853611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2896/3747/files/gilogemikevosome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5261/4311/files/14549531628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/1332072593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3367/3380/files/33949703953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4275/9071/files/490912972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1153/8072/files/crouton_for_chromebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/69053021429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2793/0011/files/feludibujilabad.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 6

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_off00006272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6272 5256 bytes
SHA-256: ebb91e30c422f62367de15022fe5dd640ace8dcf84a66155fcb445cc9ff951a8
font_01_sfnt_off0000745e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x745E 10008 bytes
SHA-256: 52350a9ab3acf4d90c3f61f2a9ff60c67d53dcca94338133d270e8ab1f7651d6

Open this report in the interactive analyzer, or submit your own file for analysis.