Malicious PDF — malware analysis report

Static analysis result for SHA-256 62dd6fede80a4271…

MALICIOUS

PDF

42.5 KB Created: 2020-08-07 22:41:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ca037d25211d1ed086d61e9677b107e SHA-1: 7aa0508b0a65b0d528dfeaaa7eec04221d49e765 SHA-256: 62dd6fede80a4271d1deec5e9e6754dad6aefdadb6bceac41c3cbb1c2e7f1bd3
194 Risk Score

Malware Insights

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

This PDF document contains multiple links pointing to a redirector service, which in turn leads to a link farm of other PDFs. The primary redirector URL is https://ttraff.cc/pify?keyword=cfa+level+2+books+pdf, which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the document's purpose is to drive traffic to malicious infrastructure under the guise of providing free books.

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.cc/pify?keyword=cfa+level+2+books+pdf In PDF document text
    • http://files.peoriaarea.com/uploads/1/3/2/6/132696018/68ea4.pdfIn PDF document text
    • http://files.infraredcreations.com/uploads/1/3/1/3/131382841/tukufofe_vakojexovapa_jifajadu_sisifetebofixos.pdfIn PDF document text
    • http://tiwevab.thisstuffrocks.net/uploads/1/3/1/4/131406717/tiwumo-buzobi-xolenexudemo.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/1/0433/6674/4216/files/miboravenupufewama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/30795512813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2409/7175/files/niworamolivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5095/7974/files/download_soal_usbn_biologi_sma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6597/4690/files/aditya_birla_network_hospital_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/adding_fractions_like_denominators_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/70620961011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/7268057193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/verajifawidenorojog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/tal_dorei_campaign_guide_free_download.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_off00006778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6778 5240 bytes
SHA-256: bfb316335b1b7a24fb8c8a9ff92f35c4ac08a0978682d5d5bba9b1081a9173e2
font_01_sfnt_off00007963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7963 10532 bytes
SHA-256: de9891d1cab577eb423a498c4d0b7428e945498254c714116f3706ba0eabeadb

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