Malicious PDF — malware analysis report

Static analysis result for SHA-256 e681811cdd6400f2…

MALICIOUS

PDF

34.3 KB Created: 2020-08-21 02:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aeed81ebe4ee4c08e884fbdf668e8bb0 SHA-1: 2cfb33f4fe64ba99228b5f4586d9279b39310219 SHA-256: e681811cdd6400f21f52a3275e48ddba7eb3493a37fbb3e38989b1ba267bb63f
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.com/pify?keyword=avatar+musik+apk. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and appears to contain embedded URLs.

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=avatar+musik+apk In PDF document text
    • http://files.tochnorthernregion.org/uploads/1/3/0/7/130775402/7fb67d0bbfe3b.pdfIn PDF document text
    • http://mometa.pantanobaptistchurch.org/uploads/1/3/1/4/131483154/ee537ccd5ed0bde.pdfIn PDF document text
    • http://files.papayasplace.com/uploads/1/3/0/7/130775071/karejipejatexi_pigepuvuk.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/1/0435/8481/5263/files/communication_styles_passive_aggressive_assertive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/86152234160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3389/files/mortal_kombat_3_move_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/mugelarubodukovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/birthday_invitation_card_template_unicorn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/mofigiwomuxoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7494/4153/files/59698363971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/zuderilesosagazatuxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/sagadadize.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_off000048aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48AA 5044 bytes
SHA-256: 8096a2fb57564a697cc92b3cf524d2a51317b0ce79f1d5630fb4bd2a36068ddf
font_01_sfnt_off000059c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C4 10512 bytes
SHA-256: 02b09c983ac3a9e15e176f6cf95854695441b600ca95dff1e8734e326d35bb7c

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