Malicious PDF — malware analysis report

Static analysis result for SHA-256 24496a7bb11a00c6…

MALICIOUS

PDF

41.2 KB Created: 2020-08-11 23:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f583a7fe938d235029410d4553c6cabd SHA-1: 048f06bce14d6ae0662599d09ba432992f4364b8 SHA-256: 24496a7bb11a00c67e753d029676cf8baa38e6284d014fc308644e580696a2a7
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=annadata+books+telugu+pdf', which is also flagged as malicious. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination and potentially spread malicious content.

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=annadata+books+telugu+pdf In PDF document text
    • http://files.roisinburns.com/uploads/1/3/0/8/130874284/2567570.pdfIn PDF document text
    • http://files.dandhmedical.com/uploads/1/3/1/4/131408172/fitarigo.pdfIn PDF document text
    • http://manex.unitedmattresswarehouse.com/uploads/1/3/0/7/130776407/8296241.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/1/0434/0498/4483/files/duvibovupafodejid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6759/5165/files/pan_african_university_scholarship_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/62986185987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/29930855468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/magisters_terrace_entrance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/26237059326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/gezugasaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0099/5741/files/liwotirekuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/82812094174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/cast_bronze_bearing_design_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9605/9547/files/pumpkin_pie_minecraft_recipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3364/7525/files/piregenesajivavabixij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/megivanitosut.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_off0000631d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 5304 bytes
SHA-256: 8ddfde9274bb0997b2771fa879e8865b073213aaaedef108f96f8f3b9b620a75
font_01_sfnt_off00007543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7543 10280 bytes
SHA-256: ec86d75f90ea5259c5bd33ca167788467d00fde159d4e87b9aa2543378822aba

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