Malicious PDF — malware analysis report

Static analysis result for SHA-256 8de6fe4854f7c298…

MALICIOUS

PDF

45.1 KB Created: 2020-08-14 06:38:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb709c8ca4dcb6f561c33a2bfc4ef06e SHA-1: 44279ddc420360e5fc7f32734fc729371d40aba5 SHA-256: 8de6fe4854f7c29804ff02556391924b94cd0aa53e86684f55330271f7ef0ce1
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, including a known malicious redirector at 'https://ttraff.cc/pify?keyword=emesis+verb+form'. This suggests the document's primary purpose is to redirect users to malicious sites. 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.cc/pify?keyword=emesis+verb+form In PDF document text
    • http://files.hkmusichall.com/uploads/1/3/1/3/131398052/piwixazeri.pdfIn PDF document text
    • http://toluko.andreanoandlyons.com/uploads/1/3/2/6/132695465/wugudotasi.pdfIn PDF document text
    • http://files.beavsworld.com/uploads/1/3/0/9/130969937/zotuzuponavi_dowemarase_jetavovubodadu.pdfIn PDF document text
    • http://files.dongoble.com/uploads/1/3/1/8/131872107/suduvego.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/1/0434/0131/4456/files/how_to_adjust_car_headlights.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/mathematics_aptitude_test_questions_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/48666790768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/asynchronous_and_synchronous_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0879/3510/files/suvipejefowujenobijemotej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/vitabubejevulegonilus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/korejofaginokosag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/97872846936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5113/8715/files/84617677312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9879/1322/files/35620029732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/english_consonant_chart.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000582d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x582D 4828 bytes
SHA-256: 6522f7d64171ec42c9daea474b585736cd77d231c98d0a14f2608d22ca5cce63
font_01_sfnt_off0000688b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688B 12552 bytes
SHA-256: 0874faa01ebc52efa3d2d4754f1b7753f94c7fbf17bdbbc4261cea18acf30210
font_02_sfnt_off00009188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9188 16060 bytes
SHA-256: d26390a1b495fc4844790f49287189703365677ecb3af67b7cca25d146cf5ea9

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