Malicious PDF — malware analysis report

Static analysis result for SHA-256 c28bde555c83a38c…

MALICIOUS

PDF

44.2 KB Created: 2020-08-18 19:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abe32c2b293b18858234e965c8e18b7e SHA-1: 047f1cdf1ccd1abdbf5c257f11c192de6877fac7 SHA-256: c28bde555c83a38c85789e18d84ea9abf57b22b2ba73084ee6fb4426bd1d0989
194 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external links, indicating a link farm. The primary malicious URL, https://ttraff.ru/pify?keyword=manual+lawn+aerator+roller, is likely used to funnel victims to further malicious sites. The document body contains garbled text but also includes the same malicious URL and several benign Shopify URLs, suggesting a lure document.

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=manual+lawn+aerator+roller In PDF document text
    • http://wezijivow.kateturnerbestlifeever.com/uploads/1/3/1/1/131164211/4783803.pdfIn PDF document text
    • http://files.staceyagdern.com/uploads/1/3/1/3/131398374/5773210.pdfIn PDF document text
    • http://zogowamun.maximstevenson.com/uploads/1/3/1/6/131636879/nepiko.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/fapodepemiretewuroraga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jidaxuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/epdg_test_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0216/6435/files/memitilofopovomijijilas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/77763025840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/4757/9811/files/caballo_de_troya_10_mega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6617/9230/files/jobazokamexonemuxagej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3757/9674/files/53805868081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/wizujurifunomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2398/1979/files/arduino_mega_2560_ch340_schematic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9949/6351/files/too_many_items_mod_1._7._10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/29563768672.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 3

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_off000070cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CF 4600 bytes
SHA-256: 3c47e84fdd1997334defbf784c78894e34856869d4544a2abe5b5c2044a289f2
font_01_sfnt_off00008093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8093 10480 bytes
SHA-256: 70e44bf86ae4e4634c23d092c2ce9f673996fd84e7b57248828d2ab16409f399

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