Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ab0822a01441e9…

MALICIOUS

PDF

54.3 KB Created: 2020-08-15 20:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4888e5738e090538fa4d445812f2e4cd SHA-1: 4d72574efa9775d00e360fc843628e17471d1e27 SHA-256: 99ab0822a01441e9c2bf4079884deeb6b1daf51498ae8ad9fca029391ca1bbc2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure for an 'Anime slayer last version apk' and embeds multiple links. One critical heuristic indicates a malicious redirector link pointing to 'ttraff.cc', which is likely used to deliver a payload. Another heuristic identifies a link farm, suggesting an attempt to manipulate search engine results or distribute content broadly. The document body, though partially corrupted, contains the lure text and a URL that is also present in the heuristics.

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=anime+slayer+last+version+apk In PDF document text
    • http://files.macshistory.com/uploads/1/3/1/3/131398560/39b2fa119.pdfIn PDF document text
    • http://mikesulad.nicoleangelique.com/uploads/1/3/0/8/130874655/5070680.pdfIn PDF document text
    • http://kuvudir.fathersofthedarkknight.com/uploads/1/3/1/6/131606289/5fa440e90e81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/rabilozagigewut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/arduino_language_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8674/8579/files/tujetivedisepoputedibowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99397771733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/batokubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8095/6569/files/61375575906.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000094f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x94F6 22476 bytes
SHA-256: b9bf446b6a2e44744724eea8e1d70e2418c0d7472a4c96d9c0c14a8b4d1a2454
font_00_sfnt_off000056e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56E7 4968 bytes
SHA-256: 771f24654796c844cf214baf5fd5e7df82efd9ce723ab71da6a4ec0490c78a98
font_01_sfnt_off000067ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AB 14584 bytes
SHA-256: e61c769174402b64fcf655402552f931ce42463d6dd0bb7d40995fa2d5d5828b
font_03_sfnt_off0000bc4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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