Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19075a6aaf09fe3…

MALICIOUS

PDF

43.4 KB Created: 2020-08-15 04:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecaba4f54c45e05ab780b6c6ac8b3890 SHA-1: 7c87b31f6d9e8d2186fa3e7749a82eddbcc9d68c SHA-256: e19075a6aaf09fe3b801b736d73cbbbfc1bef7153eacebc4e690b4ac3dab827f
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, with a critical heuristic firing indicating a link farm and another pointing to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the primary malicious activity appears to be the distribution of numerous links, one of which leads to a malicious domain.

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=bts+love+yourself+answer+album+cover+hd In PDF document text
    • http://jagetuvo.la-musa.net/uploads/1/3/0/7/130738902/5048bb70.pdfIn PDF document text
    • http://files.en.homecade.com/uploads/1/3/0/8/130874332/2174676.pdfIn PDF document text
    • http://ripuxoz.district4trials.org/uploads/1/3/2/3/132303382/wifuseramilire.pdfIn PDF document text
    • http://files.latreiashutters.com/uploads/1/3/1/4/131453065/sogeted.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/1/0431/4683/8173/files/hr_workforce_planning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/53966203739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6773/6225/files/initial_stage_crossword_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8943/6580/files/88411879301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3487/7850/files/angular_7_website_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/ameloblastic_fibro_odontoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5414/5444/files/can_only_hear_discord_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/25420278523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/wifesiwupufa.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_off00005e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E75 5704 bytes
SHA-256: 96745d65162a1b492c2e28344bf2c014ea519d9746cf5fa05272aa02f95f9224
font_01_sfnt_off000071c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C7 14756 bytes
SHA-256: ec555a615d59ecd756175bf274f90c6bb2a9fac6712415a66df80ca3262c1a77

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