Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0c20ac5810d2c7…

MALICIOUS

PDF

48.9 KB Created: 2020-08-11 14:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92f0f280263064ec3995c6e28ab890fa SHA-1: 48893f11e13fcb1ebcdf427cad8438033efb8ed4 SHA-256: 1b0c20ac5810d2c730d3978e3936958ad6af6514a537cab4e51047b2d3b83873
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links redirects to a known malicious domain (ttraff.ru). The document body contains garbled text but also includes the malicious URL, suggesting it's a lure to trick users into clicking the link. The primary attack pattern involves redirecting users to malicious infrastructure via a link farm.

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=glioblastoma+multiforme+pediatria+pdf In PDF document text
    • http://files.rebeccaattia.com/uploads/1/3/1/1/131164027/db8979e.pdfIn PDF document text
    • http://sivebar.felixjarrarmusic.com/uploads/1/3/0/9/130969742/ninevelule.pdfIn PDF document text
    • http://files.buzz4bugs.com/uploads/1/3/0/8/130874658/6669e9a0ee9fe.pdfIn PDF document text
    • http://files.littlerabbitryontheprairie.com/uploads/1/3/1/3/131379295/29d1a4f9.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/1/0432/9324/5590/files/83168590698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0545/2193/files/39705726030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1940/2405/files/categorias_del_materialismo_dialectico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45251784546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/loderixuxixefedegeroso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/hydraulic_accumulator_nptel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/reliability_centered_maintenance_second_edition_john_moubray.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/nujurexofejagesawapikog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/39778706374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/kaxijogimamepadidipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/44587285321.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_off00007478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7478 5132 bytes
SHA-256: c57dea96b14cf5ed731ac1c10411843b7ad741d36155965eb0100db1be53e352
font_01_sfnt_off000085eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EB 10060 bytes
SHA-256: 01e499692fe5f6528d10b63f89a4fb2030972db3af7623417d217e2c30313913
font_02_sfnt_off0000a870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA870 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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