Malicious PDF — malware analysis report

Static analysis result for SHA-256 7afbd202976b0785…

MALICIOUS

PDF

45.4 KB Created: 2020-08-12 09:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c7a9f1481d1b1007e13e222ef19b08b SHA-1: 488fea5480c7ef3366ab7468d41bf10b44981b8a SHA-256: 7afbd202976b0785b69392ea75e04ccb1f14c14d0bf7d5a0f465c0fc72f52688
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service that is known to host malicious content. The document body and heuristics indicate a lure for free educational material, likely a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the link farm suggests an attempt to game search engines for distribution.

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=german+language+for+beginners+pdf In PDF document text
    • http://files.cedarhillsoaps.com/uploads/1/3/0/7/130776015/dujewopuwiloj_xewizozaxudoja_xuvexi.pdfIn PDF document text
    • http://files.nycea.org/uploads/1/3/0/7/130776088/fematawilu.pdfIn PDF document text
    • http://files.jennifercrallpsychology.com/uploads/1/3/1/6/131606954/2048207.pdfIn PDF document text
    • http://files.wilbanksreptiles.com/uploads/1/3/1/4/131407057/d84ce4.pdfIn PDF document text
    • http://savesa.triobistro.com/uploads/1/3/1/8/131871699/gopamo.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/1/0430/4781/3269/files/42341856022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5489/1161/files/griffiths_quantum_mechanics_second_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/tabadetixeteziki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0735/files/8040677635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5947/files/wutosinufisap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1864/1830/files/andrs_manuel_lpez_obrador_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3780/8024/files/urdu_taqreer_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4872/9767/files/16755518893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopiforosolakalaxelavur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/riponagov.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_off0000660e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660E 5336 bytes
SHA-256: 3e7ea1429129e9c7d509f5d4d46878144336d30306c83e62bcd674675b15ea3b
font_01_sfnt_off0000780d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x780D 10060 bytes
SHA-256: ac302e8ebeeb0e44c6f4b58433a4cc87101b1cb53202413967205be609e47a4c
font_02_sfnt_off00009a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A83 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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