Malicious PDF — malware analysis report

Static analysis result for SHA-256 a675314196056092…

MALICIOUS

PDF

56.0 KB Created: 2020-08-13 18:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5feef242094e59c1adb04d2c7dc185d5 SHA-1: 485d79166db07f2eb570b734d436e98cc75d1ef3 SHA-256: a6753141960560927513f5cf9ec20b786b11af5c076804e481c6f266e20f0392
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 resources. One critical heuristic firing indicates a link to a known malicious redirector at 'https://ttraff.com/wb?keyword=ejercicios%20conversion%20de%20unidades%20de%20volumen%20pdf'. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.com/wb?keyword=ejercicios%20conversion%20de%20unidades%20de%20volumen%20pdf In PDF document text
    • http://files.arkansasdreams.com/uploads/1/3/0/9/130969545/nijomoxizopof.pdfIn PDF document text
    • http://files.theluxeinventory.com/uploads/1/3/1/6/131606069/52185.pdfIn PDF document text
    • http://files.melrockworld.com/uploads/1/3/0/9/130969474/4697716.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/1/0431/8376/7713/files/49286783403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/91908371496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/dobaguboru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4993/3208/files/lulotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5802/0000/files/arm_workout_at_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0009/3083/files/retokugefodolug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5902/5822/files/80429587283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9667/0365/files/tibelewoxidapige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/38686633868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/33315883132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/escape_from_monkey_island_walkthrough.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 8

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_off00009747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9747 5392 bytes
SHA-256: 814dd6dfdc315f0ad6aad9221ce33d764e8f3071c32715ef738c2d61ccf06aa9
font_01_sfnt_off0000a994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA994 12136 bytes
SHA-256: e4a9c984a192cadd7c60b816374f8289a9bda41435aa97b6a0a016a42b1928d8

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