Malicious PDF — malware analysis report

Static analysis result for SHA-256 1582029e8de41ab5…

MALICIOUS

PDF

35.3 KB Created: 2020-08-28 12:22:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dea289fdaa3c99cccd73de484045da20 SHA-1: 486f4c19025c654f2cf94c0eb640b21bc85d12ca SHA-256: 1582029e8de41ab5745425dee75ed81b7b1e09db4f22ce4adf777cc6a0312e58
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, many of which point to an SEO redirector infrastructure. The primary redirector URL is https://ttraff.club/pify?keyword=kertas+kerja+sarang+burung+walet+pdf, which likely serves as a lure for users to download further malicious content. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports the malicious intent.

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.club/pify?keyword=kertas+kerja+sarang+burung+walet+pdf In PDF document text
    • http://files.delaneydrywall.com/uploads/1/3/0/7/130776726/376224.pdfIn PDF document text
    • http://files.stephaniejoycecole.com/uploads/1/3/2/7/132712306/6443141.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/1/0432/7440/3996/files/1998_mitsubishi_montero_sport_ls_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/figomumivumutepudoxabule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/riderisevusoponetex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0970/3061/files/tinkerbell_movies_all_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/16788640491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/android_one_xiaomi_redmi_note_5a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/convert_file_to_microsoft_word_document_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/kixulesare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/turebewurofexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/mamejoxidined.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7345/1670/files/cdc_guidelines_intravascular_catheter_related_infections.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6455/6710/files/seleganalomagewavo.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 4

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_off00004a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6D 5552 bytes
SHA-256: 6b8d411aedfaad90df3200208a97dffb5d9524418bdd7b356ae8cd84b29ca0ae
font_01_sfnt_off00005d72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D72 10280 bytes
SHA-256: 080d887963d72e8fa109b8da1ccadfdb5dffcac2095b6d7b3060d0288925cf23

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