Malicious PDF — malware analysis report

Static analysis result for SHA-256 7adf4637f835acc1…

MALICIOUS

PDF

44.7 KB Created: 2020-08-12 04:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31f2aee8602036bf900a534732e6920b SHA-1: 8a1d51a1fbf4acc89895bf05213a4b3002768f0f SHA-256: 7adf4637f835acc145ad67a15e188035ffc5782977af330891fd1641608aa38c
194 Risk Score

Malware Insights

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

This PDF file contains numerous links to external PDFs, many of which are hosted on what appears to be a link farm designed for SEO manipulation. The primary redirector URL, https://ttraff.ru/pify?keyword=ncert+biology+pdf+in+english, is flagged as malicious and likely serves as a lure to download further malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing the phishing attempt.

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=ncert+biology+pdf+in+english In PDF document text
    • http://files.willmarhypnosis.com/uploads/1/3/0/7/130775398/b42cec8bd5d5e0.pdfIn PDF document text
    • http://files.sophiaunfolds.org/uploads/1/3/0/7/130775675/47b33d035c657.pdfIn PDF document text
    • http://rosafe.rialtotrophy.com/uploads/1/3/1/4/131407164/771a1efd6ab48a6.pdfIn PDF document text
    • http://bagoje.acousticecology.com.au/uploads/1/3/0/9/130969352/puxudetebu.pdfIn PDF document text
    • http://files.joyspringsbyjudy.com/uploads/1/3/1/8/131872298/b398af129502c48.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/1/0430/9614/6074/files/57634991230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1555/9573/files/61425189521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/95867429944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/dajamekaguviwavulevexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sefumiwizekoreletete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/john_j_macionis_sociology_14th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/jawobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4442/8181/files/bodilaferodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/srimad_bhagavatam_10th_canto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/89446906918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6647/files/rulagufij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/payback_period_method_example.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_off00006683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6683 5416 bytes
SHA-256: 9819713e359a2ede1eaabd8a4db9c229afc55d151ba966c02592ca5ddc7d3f11
font_01_sfnt_off000078ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 13780 bytes
SHA-256: 0e66b60153f0e16db0b29550cc2ad600c6e22a3624f85602526ad64218f41ebf

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