Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3ec181dbe41914…

MALICIOUS

PDF

48.6 KB Created: 2020-08-15 22:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ff640660ea4e74034e0c981df04106f SHA-1: e85b829fe2f877f76e2518c0341e79de925d7164 SHA-256: 2a3ec181dbe419146643a0f779c1743f4b1c0f552fdf9331c2b73eadf6fe7082
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with at least one identified as a malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=audiator+booster+pro+apk, suggests a lure related to software downloads. The presence of a large link farm indicates an attempt to distribute malicious content or conduct phishing operations. 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.cc/pify?keyword=audiator+booster+pro+apk In PDF document text
    • http://files.efficiencybook.com/uploads/1/3/1/4/131453998/c4f24.pdfIn PDF document text
    • http://xudojikeb.cowpencreekfarm.com/uploads/1/3/0/7/130776791/9228574.pdfIn PDF document text
    • http://files.valkrieshopgoddess.com/uploads/1/3/0/8/130873997/suwegexomaz.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/1/0435/1026/8064/files/72393027774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/48794356890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/wemigubub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sobobubujuwin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/baofeng_walkie_talkie_frequency.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/fimusodifagewedowil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/95892783947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/kotarumotamerivepumabula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8333/9678/files/avr_studio_6_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3982/files/traduction_anglais_franais_d_un.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/68289662958.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009c1b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9C1B 17204 bytes
SHA-256: ca76e801f989522b1bbd681d14775a62a8caad147adb1beac3c2381ade9f9462
font_00_sfnt_off00006823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6823 5112 bytes
SHA-256: 374e291313e5d737cd1fe6c071c0b01f38a9539079e6b4fc34580a74f53ea308
font_01_sfnt_off0000798e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798E 10048 bytes
SHA-256: 50d59a26e24cad19de6a8f20dbf5596c2d32fda3c05ce9eb0c65b75831373cca

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