Malicious PDF — malware analysis report

Static analysis result for SHA-256 5871751ac96ca474…

MALICIOUS

PDF

47.6 KB Created: 2020-08-21 00:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac9376971d8604136a281c94b664bb44 SHA-1: 0fb11996a2952cbe9b98eb4c730868873c1e00ca SHA-256: 5871751ac96ca474037ade56914a5dbadf83a525a2523c011b8be00a7a58c3cc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as search results for 'Flowers in the Attic 2014 movie', but the primary link redirects to malicious infrastructure at ttraff.ru. This suggests a social engineering lure to drive traffic to potentially malicious content or phishing sites. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection attempt.

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=flowers+in+the+attic+2014+movie In PDF document text
    • http://files.kuya-waynes-angels.ca/uploads/1/3/1/0/131070631/vaker.pdfIn PDF document text
    • http://files.neschoollibrarians.org/uploads/1/3/1/6/131637021/rawarewu.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/1/0428/1267/0111/files/ruwulebudagimibuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2470/1845/files/vagabat_gita_in_bengali_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/troy_bilt_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5778/2690/files/zezogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1272/files/honda_shadow_500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5054/7870/files/electrophilic_substitution_reaction_in_aliphatic_compounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6599/9511/files/jipafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/biohazard_5_game_apk.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 1

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_off00007a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A30 5560 bytes
SHA-256: 127134b15c7616a902fed5102022c77f590b251a7202b04e95ec7f1bd32fb7a3
font_01_sfnt_off00008d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0B 10668 bytes
SHA-256: b2ca7ebf9b57e3f3462add9c88e20c7b704c3be1808a75789338fba8080c2087

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