Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49c78427517268a…

MALICIOUS

PDF

42.4 KB Created: 2020-08-18 18:20:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2cbae2da7023f9f173760d2f3c004360 SHA-1: 8b77c9d6b8442e71bec09367a5a4283dcbe6518d SHA-256: f49c78427517268a39d10b475ec0d110ad925e1ad9bc43df597f1d3cd58dd449
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm strategy, aiming to lure users to external sites. The primary malicious link is https://ttraff.ru/pify?keyword=halloween+coloring+math+multiplication+worksheets, which is likely used to redirect users to further malicious content.

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=halloween+coloring+math+multiplication+worksheets In PDF document text
    • http://files.lakuyaeko.com/uploads/1/3/0/8/130814308/29cc82ac3a13.pdfIn PDF document text
    • http://tovur.normandy-battlefield-tour-guides-association.com/uploads/1/3/0/8/130873804/8891410.pdfIn PDF document text
    • http://files.dromtrasnans.com/uploads/1/3/1/3/131380899/5327484.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/1/0450/7703/7219/files/bailey_and_love_surgery_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/22621730531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/bodevewapugikotevokeweva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6935/8758/files/70066620555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4814/7867/files/kilenaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7868/8663/files/26822549310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3874/3450/files/liquor_inventory_list_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/vetegebe.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 2

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_off0000683a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683A 5464 bytes
SHA-256: c3aee5b05ed12d7e2757214ca264871dd8051b9e24954d476e0184c68bcdb69d
font_01_sfnt_off00007ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB5 10008 bytes
SHA-256: 5bea3b9d88d082d0bd556841b6d2016bc8d2ec2e42a1e14e3f9a4c95cc346a68

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