Malicious PDF — malware analysis report

Static analysis result for SHA-256 785917adc19f621c…

MALICIOUS

PDF

46.7 KB Created: 2020-08-27 21:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a393e13a071c527f3b6863da139f645 SHA-1: 6021a487384f843bbec4c83f106f72a1d250feed SHA-256: 785917adc19f621c3350ae9e5e5ff646e3fc7002faa6aa009572c154b244196e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service that appears to be used for SEO spam and phishing. The document body itself contains the primary redirector URL and several other PDF links, suggesting a coordinated effort to drive traffic to potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of a redirector link to a 'free download' lure reinforces this assessment.

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/pify?keyword=archie+comics+download+pdf In PDF document text
    • http://files.yellowmedicinereviewstore.com/uploads/1/3/1/3/131381109/0b4fc.pdfIn PDF document text
    • http://files.entechinspections.com/uploads/1/3/1/4/131437157/7dac105d.pdfIn PDF document text
    • http://files.bridgewaypropertiesinc.com/uploads/1/3/0/8/130873833/gegexuwetuv-janugunalabifo.pdfIn PDF document text
    • http://files.mesajuniors.com/uploads/1/3/1/4/131453749/8056776.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/1/0430/7245/4807/files/34001278930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/deezloader_remix_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2194/3463/files/fortnite_out_of_date_replays.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1930/5113/files/american_pickers_episode_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/3677/2261/files/sedoririzukagobejumuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/8374334173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2293/2373/files/83581368875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/38058168614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/desoto_county_library_mississippi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8296/3349/files/xisikepoxamefazebijav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1586/3463/files/bapepidinavijaxalemijipop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6244/2661/files/43739000638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/website_development_contract.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/92380248326.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
🗂 Part of campaign: mesajuniors.com 4 samples

Related samples 8

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
font_00_sfnt_off00005696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5696 5476 bytes
SHA-256: 2958196091e9c8c3ed2abd6155d56e50d2408122e022de71b0e8d2e8761526f5
font_01_sfnt_off0000690f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690F 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000719d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719D 10668 bytes
SHA-256: 59cd14f250afc26d0fcb0079c5b80fee47d1cdfefbe6e3a245bfec773e4f4e28
font_03_sfnt_off00009642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9642 16756 bytes
SHA-256: fbe495b75c5a8c8acf523d54f1517150ad20b3206d0595af7d63abd9231f2001

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