Malicious PDF — malware analysis report

Static analysis result for SHA-256 07cf440f41cee4bb…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 01:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cf4ce8e044ad678596a7dddb9683538 SHA-1: 528f87ef28e0f1cae2e9fdf0995427b07d3929b6 SHA-256: 07cf440f41cee4bb877afd9152c8e600da1b9b6068222ebe868a90ab2156ee42
202 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, masquerading as a dictionary download. The primary redirector URL, https://ttraff.ru/pify?keyword=oxford+english+english+tamil+dictionary+pdf+free+download, is flagged as malicious. The document body and embedded links suggest a phishing attempt to trick users into downloading potentially harmful files. No scripts were extracted, but the overall structure and URL reputation strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=oxford+english+english+tamil+dictionary+pdf+free+download In PDF document text
    • http://files.sierrastrange.com/uploads/1/3/1/4/131482975/7221298.pdfIn PDF document text
    • http://files.mimiswords.org/uploads/1/3/0/7/130740177/59e4f.pdfIn PDF document text
    • http://wijalor.gendiesel.com/uploads/1/3/1/8/131856725/nowawujefo_jufumamepefero_wufule.pdfIn PDF document text
    • http://files.whshuskymusic.com/uploads/1/3/1/4/131406960/gujetigenanaz-rifumibikafe.pdfIn PDF document text
    • http://files.costellohsie.info/uploads/1/3/0/9/130969143/wipapebagolun-lufoka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/ruby_subtract_arrays.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1653/3654/files/disorilezapiteziwojiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6988/8917/files/37831023412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3331/0870/files/private_security_guard_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/basic_heat_and_mass_transfer_mills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5287/5424/files/98117159982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/kujinapegogijusofapazika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/kasibigewafavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5598/6341/files/61217792695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/77530855020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/circuit_switching_networks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/jibikuziravedagonudim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/kofowazivunobixuzezosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8856/7706/files/catecismo_de_la_iglesia_ortodoxa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE5 5648 bytes
SHA-256: d8c0998c2b30e253f881ea44c3ffb7cd82ff58bb5d905c465125673cf742ea30
font_01_sfnt_off00006f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0D 9664 bytes
SHA-256: 87c61327fc6523245a0529518196a2a00a243068b065ea643c7bfbcaeba15810
font_02_sfnt_off00009034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9034 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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