Malicious PDF — malware analysis report

Static analysis result for SHA-256 7793fef0dd35092c…

MALICIOUS

PDF

45.4 KB Created: 2020-08-12 00:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed15319a215cddf85619e2089343d74a SHA-1: 4d2777c4dbe7068096f2f1290d1875ed8fb975ed SHA-256: 7793fef0dd35092cd14378fb8e5bbb58fec664201c2a41566c0b09149b2d21f7
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector infrastructure designed to host malicious content. The primary redirector URL is https://ttraff.ru/pify?keyword=dosis+cefadroxil+anak+pdf, which is flagged as malicious. The document appears to be part of a link farm or SEO poisoning scheme to lure users into downloading potentially harmful files. No scripts were extracted, but the embedded links are the primary vector for malicious activity.

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=dosis+cefadroxil+anak+pdf In PDF document text
    • http://files.drharrold.com/uploads/1/3/1/3/131398582/141cd7.pdfIn PDF document text
    • http://files.nsuasda.org/uploads/1/3/0/8/130814874/84afa1c4d5db6.pdfIn PDF document text
    • http://files.thefifacorruptionscandal.com/uploads/1/3/1/8/131872087/46810.pdfIn PDF document text
    • http://files.karenabryantllc.com/uploads/1/3/1/4/131453329/porufavezoli_rezisunagix_sutegugajo_sadukaf.pdfIn PDF document text
    • http://watuketi.decisivemomentsph.com/uploads/1/3/1/4/131453540/113263.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/1/0433/0687/7080/files/kufotiniponekurek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/nusenur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/the_jaunt_full_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/minecraft_exit_code_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/67509668310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9791/5545/files/26978250018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9313/9364/files/32666057646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/23577109397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2488/7456/files/example_of_simple_acknowledgement_in_research_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/36873966576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5793/7561/files/regudusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/pibogepoperodugavalumome.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000746b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746B 5280 bytes
SHA-256: 3cb90a34867aeaf321d46dba01a1820059b1692b9c653109e3b85a81a7224b27
font_01_sfnt_off00008671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8671 9956 bytes
SHA-256: 81b4f3a1614dd406c192a91ca927f14bf9d84f4f792d6e9c71930dd99f96bcb9