Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc6f141b33a018d9…

MALICIOUS

PDF

114.8 KB Created: 2020-08-14 12:13:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94c6477ff1dad6bfca8ef649aa1d92c4 SHA-1: 7669171370199e011d6a0d617797beb63d7cd703 SHA-256: dc6f141b33a018d91253c68e9a00a9c0c0d73b7113d765fa0ad9ea2e5b3221f9
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass external PDF link farm, with many links pointing to potentially malicious content. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=urvashi%20ramdhari%20singh%20dinkar%20pdf%20free%20download'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to trick users into clicking this link, which likely leads to malware download or a phishing page. No scripts were extracted from this sample.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/wb?keyword=urvashi%20ramdhari%20singh%20dinkar%20pdf%20free%20download In PDF document text
    • http://files.paavoladesign.com/uploads/1/3/1/6/131606201/db1fc2e94f54.pdfIn PDF document text
    • http://xobanen.kansasalphadeltakappa.com/uploads/1/3/2/6/132683188/3362112.pdfIn PDF document text
    • http://wojalud.lipstikalley.com/uploads/1/3/1/4/131483492/panebi.pdfIn PDF document text
    • http://files.crystalcovenrmp.com/uploads/1/3/1/4/131453998/3232106.pdfIn PDF document text
    • http://files.classicgatemakers.com/uploads/1/3/1/4/131406068/genipeko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3179/6632/files/bakasura_kannada_movie_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/68223097820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/76433859569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/wogafexusewadesewaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6963/5749/files/45102962848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/naniwunuvolarifimidozasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/43297986090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/81389005311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/vugefekotefuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/nemoxagiwutamixopetitom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2953/6668/files/43578186153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2304/6568/files/bromatologia_e_tecnologia_de_alimentos.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000151b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151B5 5660 bytes
SHA-256: 2606faecb924da56c19212082da124dc7674b2aabac6f2dcde32d8dc35bc6c15
font_01_sfnt_off000164e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164E6 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off00017049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17049 14004 bytes
SHA-256: 31fd45d24611fc6f291a52d682cc685d5e4255129ce5c35a02c279b1cd24d9ab
font_03_sfnt_off00019c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19C68 10040 bytes
SHA-256: 490f78f772dc0e523907ac494921400d5e62e6f760d0baae6d7286cd70c85a0c

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