Malicious PDF — malware analysis report

Static analysis result for SHA-256 c055ffea79efbe25…

MALICIOUS

PDF

33.7 KB Created: 2020-08-04 06:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8e8b3e9cfdc012f19c2ac83ab32804c SHA-1: 5f2d1752b634b113d29eb3073116aaacd1f875a6 SHA-256: c055ffea79efbe25bab63d82350b751ca612d097cdb323bf344977496e34ea62
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at `https://ttraff.com/pify?keyword=diccionario+biblico+nelson+pdf`. This redirector is likely used to obscure the final malicious destination. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to lure victims. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=diccionario+biblico+nelson+pdf In PDF document text
    • http://files.montebaldoorbust.com/uploads/1/3/0/9/130969592/zadenujoz.pdfIn PDF document text
    • http://files.elyriadev-center.com/uploads/1/3/1/8/131871555/vofegidonirotozupu.pdfIn PDF document text
    • http://files.communitycouncilma.org/uploads/1/3/1/1/131163492/5256f.pdfIn PDF document text
    • http://files.lawwithdenise.net/uploads/1/3/0/9/130969291/823263.pdfIn PDF document text
    • http://files.ashaniketannandibazar.org/uploads/1/3/1/6/131606262/famogosesibaf.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/1/0428/3708/2271/files/51544458837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/eaton_breaker_types.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8827/1777/files/11709985892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pizejop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/puxadaxunuxanusigevir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/67833196421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/bawegemusugurenukovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujufizolotedugogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1946/4867/files/chemistry_for_grade_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/jifaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3608/0288/files/birewekovoninajaj.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 6

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_off00004715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4715 5288 bytes
SHA-256: eb77887e6c2819528cf54cd76952767f0999c92522cdad1b34549a1ae0403ae3
font_01_sfnt_off0000591f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x591F 9616 bytes
SHA-256: 722ab9b844d7ff9a4eab3d8ccfaac0016dad3757431a232d65e1a5a346d2e89f

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