Malicious PDF — malware analysis report

Static analysis result for SHA-256 41a651b71ee22d26…

MALICIOUS

PDF

40.2 KB Created: 2020-08-10 13:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c25c9e5417db8aaa72897a192cd3663 SHA-1: ba5752d1635a92741cd58dcbce629f620fdde165 SHA-256: 41a651b71ee22d2642c2bec0eb0b9c5201caff14ee8579fd4ac61bc26c3cf15c
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=new+aged+care+accreditation+standards+pdf`. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many of which are hosted on `cdn.shopify.com` but some are on suspicious domains. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to redirect the user to a potentially harmful site.

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=new+aged+care+accreditation+standards+pdf In PDF document text
    • http://files.weirdprovidence.org/uploads/1/3/0/7/130776673/e815cda1cab.pdfIn PDF document text
    • http://mavipip.plasticactionuk.co.uk/uploads/1/3/1/8/131856372/muxoxivufadim.pdfIn PDF document text
    • http://files.marvinjwolf.com/uploads/1/3/1/6/131607023/6f564be9.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/1/0452/1931/5872/files/download_al_quran_juz_1_30.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0200/2595/files/37103521693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0645/0074/files/35275317553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/12133632773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1882/1530/files/1972_biological_weapons_convention.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/96324024842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/14854968160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/3442778453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3006/9927/files/fusionner_2_sous_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/vegezudupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1024/5279/files/ciencia_ficcion_cuentos_cortos.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 3

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_off00005fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDD 5352 bytes
SHA-256: 11142bd951a8d14b5800dd7c446084693bf42bc270ae299bca28fbed572d22c4
font_01_sfnt_off0000723b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723B 9900 bytes
SHA-256: 18cf9095435739a2e1cf5838e2d9393705006c9851ab5b4200679bd7a04ae3f1

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