Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef08340cb22ffe39…

MALICIOUS

PDF

38.2 KB Created: 2020-08-15 06:26:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5de170bbe1352971226847c336d013a3 SHA-1: 3034bb922c79977d5c39b4e467e89d6a5f371436 SHA-256: ef08340cb22ffe39d0338441c0bfb9252a0455415b8bbd838ca65e85cc9250e0
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Fema is 101. c answers' and includes the malicious URL, suggesting a phishing or social engineering lure. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing 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=fema+is+101.+c+answers In PDF document text
    • http://files.crescentbaydollfanciers.com/uploads/1/3/0/7/130775490/jilobikito.pdfIn PDF document text
    • http://files.jemun.net/uploads/1/3/1/4/131437538/zimef-pafitakimu-kazuwapofi-xefulogekasa.pdfIn PDF document text
    • http://zufis.northstarpropertiesct.com/uploads/1/3/1/4/131407592/wibevewitere_momogo.pdfIn PDF document text
    • http://pazuxitas.gettreschic.com/uploads/1/3/0/8/130874012/lurewuxaz-jekitaravifabik.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/1/0433/5278/5055/files/19143342739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/26481341763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1979/6633/files/13124785870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/fabeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/66390046715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2449/0397/files/barycentre_de_3_points.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/zelomozemivazevujuxukat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8123/6634/files/the_odyssey_translated_by_emily_wilson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3732/2390/files/5630442414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4777/9478/files/caries_dental_en_nios_de_6_a_12_aos_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/3029003975.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_off0000581a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581A 5184 bytes
SHA-256: f3c9589ab796bab7293bed90b14b86afbf6c80305e8da96fe335c9d74daf6fbd
font_01_sfnt_off000069bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BF 10020 bytes
SHA-256: 975a8deb955ad9718fc7c286c8f5728a7a95da822e655147b7ed9053794bd29b

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