Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b57e179bbe42de…

MALICIOUS

PDF

53.7 KB Created: 2020-08-08 01:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 675554afd4cf4b20cbe59fe5dc5f3aa2 SHA-1: 78a0471ef03ef4b87278d818844a21370042c75b SHA-256: b8b57e179bbe42de1649ef11082463392fd4a33bed9b7f4810f9de005874a511
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many of which are hosted on seemingly benign domains but are likely part of a link farm designed to obscure malicious redirectors. One critical heuristic identified a direct link to a known malicious redirector at https://ttraff.cc/pify?keyword=canon+5d+mark+iii+tutorial+pdf. The document body, though heavily obfuscated, contains references to the Canon 5D Mark III tutorial PDF and the malicious redirector URL, reinforcing the lure.

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=canon+5d+mark+iii+tutorial+pdf In PDF document text
    • http://files.superaggressivereviews.com/uploads/1/3/2/6/132682585/jamadokag-vabeferewoxawag-nofaj.pdfIn PDF document text
    • http://files.sligocitychurch.com/uploads/1/3/0/7/130739369/kevamimugorafuz_vamofitozax_suwiratexerek_firop.pdfIn PDF document text
    • http://files.parentspeace.com/uploads/1/3/2/6/132695602/5debe488.pdfIn PDF document text
    • http://files.adelaidehulahoopers.com.au/uploads/1/3/1/4/131408017/rusizunup.pdfIn PDF document text
    • http://tarakib.menasci.net/uploads/1/3/0/9/130969744/sabenerarowi-goxit.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/1/0436/2944/5273/files/physiotherapy_exercises_for_ankylosing_spondylitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/lagefifamuverepazuwifewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/lerimisidatarevexagawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0397/6614/files/gexujoderagom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/folufirevulawomefupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/66094806276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/22115642716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/analytic_phonics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/nigovumusaxarudisoru.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_off0000939a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x939A 5104 bytes
SHA-256: a9dcabcd88c28dd44cf08297e562e1a1ebca362be408c7121b6508ede6bfefc6
font_01_sfnt_off0000a4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E7 10900 bytes
SHA-256: f549a7446f900893c6a9c264f261f5a2e27960b615be2def1655a45133c7bd4d

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