Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cda047e51a534b…

MALICIOUS

PDF

42.1 KB Created: 2020-08-23 00:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77be38ecaaf0a56c6399732e16b2838b SHA-1: 16b0bd14f6137bab13b59f68913d5572083ac5dc SHA-256: d0cda047e51a534b96ca0ab797c8e37b69c4f76573e0bb55db19e0ce5095c418
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is presented to the user as a factoring worksheet. This suggests the document is designed to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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.cc/pify?keyword=factoring+word+problems+worksheet+doc In PDF document text
    • http://zodan.khoueiryrealestate.com/uploads/1/3/1/0/131070420/xunesawe.pdfIn PDF document text
    • http://files.evolvecounselingoflansing.com/uploads/1/3/1/3/131383247/cca1c.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/1/0428/5497/3606/files/8508737254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/vtech_phone_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/nufukejume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/valuzune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/audit_report_format_fy_17-_18.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/mapadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/xixarejufidumig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/32972559485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1073/files/dopofaxuwetevenigudizale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/54346307279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/nosafirusajej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/rizisewirakixasovuwukeson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4442/8181/files/kovotegibilipixuwogixivem.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 2

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_off00005f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2F 5736 bytes
SHA-256: f676ba4edfb4061d5647e08e8e71e6e78087f40058e185513d0898e103bd2989
font_01_sfnt_off0000728f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728F 12616 bytes
SHA-256: 9e0e188bcd501e3adcbf7eeca54d77452a8ab0d5eac9f35f586c5c4ffac823cc

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