Malicious PDF — malware analysis report

Static analysis result for SHA-256 8899d44221f4fa15…

MALICIOUS

PDF

54.3 KB Created: 2020-08-13 22:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5118555df645169cd52ba3dd6b9bda85 SHA-1: 52869b5a6996fbabb11c3c1989627b34ee250858 SHA-256: 8899d44221f4fa1506e6230fd139779800843df933bc22c7a425dd22c3a61953
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to malicious infrastructure, specifically a redirector at ttraff.com. The document body, though partially corrupted, suggests a lure related to a 'Kingfisher airlines annual report 2015-16'. The presence of numerous external PDF links, many pointing to SEO-optimized URLs, indicates a link farm or phishing campaign designed to drive traffic 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.com/pify?keyword=kingfisher+airlines+annual+report+2015-+16 In PDF document text
    • http://tusegud.lililalune.com/uploads/1/3/0/7/130738614/nivipebuvipumabava.pdfIn PDF document text
    • http://files.afterhoursbandearth.com/uploads/1/3/0/9/130969826/rovuj-momel-kenogijarur.pdfIn PDF document text
    • http://jiretifa.wegnerauctioneers.com/uploads/1/3/1/0/131070458/mixipawe-kapiwofadunuk.pdfIn PDF document text
    • http://koketel.naturaphysicaltherapy.org/uploads/1/3/2/3/132303382/c69703905a.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/1/0431/4074/3330/files/71259568033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0498/4474/files/tufirolodugupanavojonegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/again_but_better.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2137/files/xifuworebasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/95219556987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6695/files/19873602044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/42103623062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/kawalaxefelusil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2175/3758/files/letudisunadulavuxevuwujaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/xerumapovuledikesuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/transition_to_land_habitat_of_archegoniates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9709/5333/files/86413439509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5689/6927/files/wepewa.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 3

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_off00009454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9454 5768 bytes
SHA-256: 2a0a9a21c2d37324ce28172ff986e8a871cc8723d47b790d32da4712156d5d81
font_01_sfnt_off0000a806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA806 10568 bytes
SHA-256: 3371078f04cd901b27c8d29a3e0a2a680d118586620db4740264df0a664bde3d

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