Malicious PDF — malware analysis report

Static analysis result for SHA-256 6335d598212f6eda…

MALICIOUS

PDF

37.5 KB Created: 2020-08-25 07:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 377a616c448e453453adf0114935e469 SHA-1: 51b4e5d89421d8c41622b2d74cbf7f11381d52f5 SHA-256: 6335d598212f6edab0456306b94d4d1cddf9ae523b0cddb6c74ae935c7a87c2c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The primary redirector URL is associated with malicious activity. The document body, though partially corrupted, contains text related to a technical data sheet, suggesting a pretext for the malicious links. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attack.

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=araldite+2014-+1+technical+data+sheet In PDF document text
    • http://files.thomsonlodge.com/uploads/1/3/1/8/131856860/jezedodezozexure.pdfIn PDF document text
    • http://files.bozhenaevanstherapy.com/uploads/1/3/1/8/131871786/00135.pdfIn PDF document text
    • http://files.libyanewslive.com/uploads/1/3/0/8/130873895/dotudikoj_kifatogijer.pdfIn PDF document text
    • http://files.innerstateproductions.com/uploads/1/3/0/7/130775848/37b26d561979.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/1/0438/3732/5472/files/38929621796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/87280640736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/matuxexunewela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2298/1032/files/bsc_nursing_1st_year_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/puxesatanedagasoviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/31385697610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1023/6321/files/chappal_chirugali_naa_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/12648344240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2763/5096/files/vobeluse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/43923886980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8583/9003/files/6707378451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/uc_browser_lite_apk_latest_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6044/5855/files/35582336082.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_off00005527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5527 5464 bytes
SHA-256: 1909ca8be99af7461f51819a08af59b843fcf2a3d433d1b39995e1bd711b0dc4
font_01_sfnt_off000067b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B3 9704 bytes
SHA-256: eeac58258ca2989ab3202280971269fd79cb47c102da94f05cd6d56aeb77525f

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