Malicious PDF — malware analysis report

Static analysis result for SHA-256 00591a4b1bb429c7…

MALICIOUS

PDF

38.6 KB Created: 2020-08-23 07:05:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96c154b42c0d5abb457076c5dece8f38 SHA-1: a67769fe8fac74dc52c588cd527a6c446dec8b5f SHA-256: 00591a4b1bb429c7cd40e8f0283556fe8eef55b6125272293532e444b6c35c03
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though garbled, contains text related to 'Net force and friction problems worksheet answers' and includes the malicious redirector URL, suggesting a lure to trick users into clicking. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to manipulate search engine results for malicious purposes.

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=net+force+and+friction+problems+worksheet+answers In PDF document text
    • http://dowuz.filgohomeinspections.com/uploads/1/3/1/1/131163667/pagutukunisuv.pdfIn PDF document text
    • http://files.djtonetx.com/uploads/1/3/0/8/130873941/rajonalunogo.pdfIn PDF document text
    • http://files.ufwlifestyle.com/uploads/1/3/0/8/130874676/2193738.pdfIn PDF document text
    • http://vagurawu.dianedailydose.com/uploads/1/3/1/0/131071258/e2bb8df.pdfIn PDF document text
    • http://nagumowe.46oakcandles.com/uploads/1/3/1/0/131070859/7560442.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/1/0430/4519/1841/files/jilonik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/97799409663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6054/4156/files/22065858337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5131/1513/files/english_speaking_learning_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/8466/3208/files/i_swear_song_mr_jatt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/tirafeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/chevaliers_de_sangreal_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/nubobofiraxakokit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4402/0125/files/biological_oceanography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/nmr_spectroscopy_applications.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_off000054f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F4 5660 bytes
SHA-256: e5b182e9f7152ac201fad298e484d869a341f300a3f9d890f8d4aeef21d0991c
font_01_sfnt_off0000681b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681B 10420 bytes
SHA-256: 10890896eed2732622956529b8fdafa9c09accd98314cf715fcfe598018aedef

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