Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec67db8768d4a95b…

MALICIOUS

PDF

38.3 KB Created: 2020-08-19 02:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83f20cb1967ac7e2b22e2a9bbed8f3ee SHA-1: ae98cf086d8c05c347c79049546c973d351d8b52 SHA-256: ec67db8768d4a95bc33360455f045466c72c75eea54a7af1bc7d2a44a2935063
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links, however, leads to a known malicious redirector at 'https://ttraff.ru/pify?keyword=home+alone+songs'. The document body, though heavily obfuscated, also contains this URL and other external links. This suggests a link farm or redirection attack designed to lead users to 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=home+alone+songs In PDF document text
    • http://nuvijuv.rkarimitherapy.com/uploads/1/3/0/8/130814995/wavotomewo.pdfIn PDF document text
    • http://files.racheleveholmes.com/uploads/1/3/1/3/131398515/fijasonav.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/1/0439/0384/4520/files/zelugebiwaxirawonizevugob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/76794797029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2839/3634/files/thinking_out_loud_chords_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8737/1167/files/zuwuvabebirabogafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/pixivusiwetoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/32352035853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/demamolurifafeforeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/75605281132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8151/files/how_to_download_orespawn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/bisanepatis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4528/0161/files/amazing_facts_about_animals_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6573/5328/files/ratodixizakug.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C35 4528 bytes
SHA-256: 291940bdb4edf27d955f6c07af9812ee28491a03fd9dc80a1595f14f59d95616
font_01_sfnt_off00005b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6D 10324 bytes
SHA-256: 321321f47a97f4b89e137b7281576f4941c4e0fe8839195fab1f1528b04fb616
font_02_sfnt_off00007ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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