Malicious PDF — malware analysis report

Static analysis result for SHA-256 798b6b740de80764…

MALICIOUS

PDF

44.8 KB Created: 2020-08-08 08:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 716b06ffed31231e6ddb687e6abc78e0 SHA-1: a07fbcde975b65ece9f0b46122111baa66c16918 SHA-256: 798b6b740de80764adde214180d6d3e89628a81a9b02b85c118a67e7cb1511bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though obfuscated, contains the same malicious URL, suggesting a phishing or scam lure. 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.com/pify?keyword=aging+process+pdf In PDF document text
    • http://files.elegantcooking.com/uploads/1/3/2/7/132710638/2920870.pdfIn PDF document text
    • http://files.arrowdancestudio.com/uploads/1/3/1/3/131379296/tisewufedu_xorodegupokux_gigadukewusa.pdfIn PDF document text
    • http://files.maplecountryanglers.com/uploads/1/3/2/6/132695301/rexatozekemozomefon.pdfIn PDF document text
    • http://lubolew.materials-glasgow.org/uploads/1/3/1/0/131070331/xiluxolubidexamu.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/1/0431/3802/3592/files/56130131864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/printable_calendar_november_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/collide_lyrics_kid_rock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5472/6310/files/misasavakujujokalarolam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/25279607029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4071/7472/files/98433529907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/lexojuvowusofasavonamev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/xagusuxofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/pevibanuxotiseziwip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6753/9605/files/s_10_manual_transmission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/59442832420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/8137805865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/pefigavinibuja.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 2

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_off0000719d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719D 5068 bytes
SHA-256: 3fb6b1ba931426d8b4fa6d07b68b8a3282725a87df1eae5d82e22b6673bd3c5a
font_01_sfnt_off000082f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F9 10668 bytes
SHA-256: b5966a1fe0cc499f5c962977a9d5b33ce54484cffaae9daefff4bbf0b293d433

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