Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b1024580380a5da…

MALICIOUS

PDF

50.4 KB Created: 2020-08-31 19:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9074badb4bc85ed022f178220c95201 SHA-1: 2ea708f4ee8007bf3daaf82e3f64a9c74fe3ccab SHA-256: 4b1024580380a5da5116090e1678e014cc5361493bc3885109b5341411abf30c
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=plague+inc+scenario+creator+apk+revdl'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0434/7274/8710/files/demivatogatosoreletarod.pdf'. The presence of a 'download button' lure further supports the conclusion that this document is designed to trick users into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=plague+inc+scenario+creator+apk+revdl In 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/1/0434/7274/8710/files/demivatogatosoreletarod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5671/6186/files/11792211646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6434/0130/files/brightcove_supported_video_formats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0470/9371/1006/files/59406525269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/nujetitupit.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c068f8_253cc2e5b5c04541b990f527c17c8663.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_250c8889548e4b2fb66aed7fd1bd1af5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/430cb2_e309031ec65a4fc2a49194b684068e86.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/83d902_7c11a296844d43abb7a11cacc3e3a046.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a382ee_d284b635c80841148191906018fc3427.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/575363_1c1863e6cfb940f583ff3ac9ac42909a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/30e015_b42b159b9c9a4dcbb0712405759ae1e7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/accd1f_ba261d62a9aa4accb4f11d129b51860b.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00009bf5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9BF5 19572 bytes
SHA-256: 5388f51f824d2ae35734a125cbab038e5580d21d0f9375a723d29993f2307fb3
font_00_sfnt_off00005cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEE 2880 bytes
SHA-256: 5f03d2c6bc08d28d18892b3fd5153044a2fff6aad81dd629dfd07635bf6cf50e
font_01_sfnt_off0000672b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672B 5368 bytes
SHA-256: df5a32d9703062a5309fc9ee3dd1f548cfd0927cee74fde07eba00994727eab0
font_02_sfnt_off00007983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7983 9968 bytes
SHA-256: 5afed3902f8e4ab4e9e2e6bee783ad98bbd6ce6ac0714af081c48d39f212d574