Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f559020d32fc06c…

MALICIOUS

PDF

39.0 KB Created: 2020-08-07 23:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 742a7e647a1ad9f7178a23a1e3ff94cc SHA-1: 6ca82019b5af1c427b3d8f0202b6ee91ef29cc13 SHA-256: 7f559020d32fc06c93f1c9521fdf6e9c3741652344656d25bc96ad746f4820c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary redirector URL is 'https://ttraff.cc/pify?keyword=bournvita+quiz+book+pdf', which is designed to lure users with a quiz or download pretext. The document body, though heavily obfuscated, also contains this URL, reinforcing the phishing attempt. The presence of numerous other PDF links suggests a link farm or SEO manipulation tactic to distribute the 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.cc/pify?keyword=bournvita+quiz+book+pdf In PDF document text
    • http://files.guyhang.com/uploads/1/3/0/7/130740217/b5b4853d.pdfIn PDF document text
    • http://files.bettervoicescoach.com/uploads/1/3/0/9/130969809/7264960.pdfIn PDF document text
    • http://files.kimberlycommunityband.org/uploads/1/3/0/7/130774972/mijibore_laroradipup_tuxifutekube.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/1/0438/0711/3373/files/adobe_reader_convert_to_word_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1146/5638/files/alimentao_saudavel_para_ces.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0729/3086/files/fosig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4973/0727/files/wajanidegasadadimepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6843/1265/files/98377026444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/biology_notes_igcse_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/pesilij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/newhome_sewing_machine_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3587/5745/files/51483574093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/lunirasifemiruporesirin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/limawudobusazivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/55724477677.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_off00005943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5943 5316 bytes
SHA-256: 57a84ae645c79c404946e809e70fae2d984b3cfad9f229c38c8afc13298e2f04
font_01_sfnt_off00006b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B76 10548 bytes
SHA-256: d7f0d8acb9dcd77393384d4ae3b80a343d087faf02a52f1dbb6420d89571709f

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