Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd36fad912a029e8…

MALICIOUS

PDF

47.7 KB Created: 2020-08-21 21:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4aee9a80e4ab0d7c57d552e1bc64ffb SHA-1: b52b000b9c16ef9b731dcb2903bc7cee5121dc73 SHA-256: dd36fad912a029e8334fe81b4b3aa2cbe81d499e99ceffc1d8c4fc6e1eee88e2
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link leading to a known malicious redirector. The document body mentions 'Pokemon 3d game offline apk', suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

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=pokemon+3d+game+offline+apk In PDF document text
    • http://files.trinityplantsale.com/uploads/1/3/0/7/130776344/2151838.pdfIn PDF document text
    • http://gipavufix.lexpcc.org/uploads/1/3/0/8/130874038/31c7ea.pdfIn PDF document text
    • http://files.doulaabilene.com/uploads/1/3/0/7/130775511/jenufid-furodejuxaj-vogamopusoxesaw-pemav.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/1/0429/5901/2006/files/kinulikisobetaselovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3640/4900/files/17728657717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/36492688703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/33642131597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5203/9328/files/kedopewazobumenavulipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/wixipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/12758983525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2187/6900/files/6290763491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3797/2897/files/vedic_astrology_book_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/91597285775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/xupofopofuwapejameserus.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58EA 5316 bytes
SHA-256: ef4ed6b5d383b82bcc2896e32e996fafc6d54e2d614cf83c03dd881d27b11966
font_01_sfnt_off00006af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF1 3588 bytes
SHA-256: 1517daa1f280de39ac9c40764f5354b562f06c4aea327ef3c4d86fcb38c7e933
font_02_sfnt_off00007904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7904 10092 bytes
SHA-256: c84cfe007fe959134ab6d096f797cd08d3a955e2008816bddad69a5fc081f3ee
font_03_sfnt_off00009bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB6 16304 bytes
SHA-256: 0a2507360a40dd56b84230664db2b3a2689cb34b0aa642599c8245950ba374cb