Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ce68a4d829c4f3…

MALICIOUS

PDF

51.5 KB Created: 2020-08-11 18:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 545f3057532982bc3902157b61d7b087 SHA-1: 22a828c313416662b71b3711ba0c13a083247811 SHA-256: 11ce68a4d829c4f3d0e0b50a0cf495c9b15df33d226f3904ed8feeef8508d7ae
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as information about food allergies, which redirects to a known malicious URL. This indicates a phishing or scam attempt. The presence of numerous external PDF links, many pointing to Shopify, suggests an attempt to create a link farm for SEO manipulation, likely to obscure the malicious redirector. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=alergias+alimentarias+pdf In PDF document text
    • http://files.mrtoddsclassroom.com/uploads/1/3/0/8/130873922/pekes_vijekenoru_pavitonizadaw.pdfIn PDF document text
    • http://files.antiqueaudubon.com/uploads/1/3/0/8/130874543/4888435.pdfIn PDF document text
    • http://files.cambriacountycampcadet.org/uploads/1/3/0/8/130814605/serunifigoda_zadefobesi_fixujuvaj_gikapanakumoz.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/1/0436/2846/2240/files/40232957982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5586/6265/files/mathematical_symbols_and_their_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/1015323909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/27210986329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9172/9309/files/barron_s_ap_human_geography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/noleroxutufevegakufarun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/23742825966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/firukiwufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/fazaxawupazofefukeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/4582040597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/seepage_analysis_of_soil.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_off00008959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8959 5348 bytes
SHA-256: 2c301555a0c2c5bc0f826ceee16fe22c575bf32614cc4c7222651fb4fa5f0b59
font_01_sfnt_off00009b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B6E 11024 bytes
SHA-256: fd1e34eee3fd3bf7251e2538bbb6c705ad1f085c0825a34905d85bbd5104a2e5

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