Malicious PDF — malware analysis report

Static analysis result for SHA-256 4081fdff31c4c9c5…

MALICIOUS

PDF

36.1 KB Created: 2020-08-12 10:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6922025fd0581bde474f2375be3cccaf SHA-1: 8b0d8298ab79f985d46a58794ec74229042221fd SHA-256: 4081fdff31c4c9c545b68d808d3686640c9bae80a1188e42ae151bf29bcfe764
194 Risk Score

Malware Insights

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

The PDF contains a link farm with 19 external PDF links, many hosted on Shopify, designed to appear legitimate. One of these links, https://ttraff.com/pify?keyword=orthographic+paper+pdf, is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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=orthographic+paper+pdf In PDF document text
    • http://files.art4peace.net/uploads/1/3/2/3/132302871/8095265.pdfIn PDF document text
    • http://files.woodrocksiws.com/uploads/1/3/1/6/131606257/xijexeleropox-sivusaju-dovokifup.pdfIn PDF document text
    • http://files.whatsnexteducation.org/uploads/1/3/1/4/131483492/sukofididusukopape.pdfIn PDF document text
    • http://danozus.monticelloyouthbaseball.com/uploads/1/3/0/8/130874276/445645.pdfIn PDF document text
    • http://files.cnpstudiotour.ca/uploads/1/3/2/3/132303314/fd09e887170c.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/1/0433/8073/6150/files/statistics_fourth_edition_freedman_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexikebesadunav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/73082236226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kujefitil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/32346553193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3089/4999/files/75963010603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5472/5270/files/beginner_trumpet_music_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/cadette_entrepreneur_badge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5471/0427/files/wafuwagedemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7339/6133/files/wupinuvugaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/anger_management_strategies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5384/0534/files/lotopefuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/7185659841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/zuzexovek.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50B7 5236 bytes
SHA-256: 62988a59dc61419cf00070776e43e093af6be9dd6779ca3331099aa828d68c3c
font_01_sfnt_off0000627f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627F 9748 bytes
SHA-256: 074798ac821ac1b12b264b3f242d5c0d3a675d679704cca874c79a36a9de9731