Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fe535e6eb4242e…

MALICIOUS

PDF

66.6 KB Created: 2020-08-07 21:07:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: baf762ed06f1d30a657554eb3d2fd4b3 SHA-1: a04b1052e41bd956cb9a6a2c898d133555eba75e SHA-256: 65fe535e6eb4242ef0102417af88c05314b501a3a7b2fed75f26b1df8258eaf1
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service. The primary malicious link, https://ttraff.ru/pify?keyword=difference+between+bioavailability+and+bioequivalence+pdf, is identified as a malicious redirector. This suggests the document is designed to lead users to potentially harmful content, likely a phishing or malware distribution site, under the guise of providing a PDF document.

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=difference+between+bioavailability+and+bioequivalence+pdf In PDF document text
    • http://vetuto.peter-m-acland-foundation.org/uploads/1/3/1/4/131482995/tunarubi-kunagomodipa-xijep-ratawijufexo.pdfIn PDF document text
    • http://files.ftscwomensindoorcup.com/uploads/1/3/1/4/131407818/16f7a8.pdfIn PDF document text
    • http://fikirop.bayareabreastfeedingsupport.com/uploads/1/3/1/4/131483281/6620e60c4a7b23.pdfIn PDF document text
    • http://dezekexo.codergals.org/uploads/1/3/1/4/131406390/f9f826ec4c.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/1/0433/0799/1208/files/96287470137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1632/1184/files/260631849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/44402067825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6880/8613/files/xajijekebidepokose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/75806684165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3686/0839/files/94172055840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/zubipodib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/diet_plan_for_fat_loss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/practice_present_simple.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5802/6903/files/8278798081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/holy_grail_rs3.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 4

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_off0000c72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC72E 5492 bytes
SHA-256: 90b4a5dbceefdabbc5ec6b1315e608a779aabf00e75f6c88e4f24927b51c37fb
font_01_sfnt_off0000da09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA09 10144 bytes
SHA-256: 25bafe29f91c913ec578d4b89e3227f2c43bbc1044319cf0ef1e8abb0929fcc7

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