Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c844355631e5886…

MALICIOUS

PDF

38.1 KB Created: 2020-09-19 18:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c1b59e59e0401f36313c3490685364a SHA-1: 63720be06745361eceb633ad9e0f5d9b0bfb45dc SHA-256: 1c844355631e5886ed8f7298c8001abf553c78959f28cd1805ba817862d08f02
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Mechanical behaviour of materials' and the URL 'https://ttraff.me/wix?keyword=mechanical+behaviour+of+materials+courtney+pdf', suggesting a lure to a malicious site. The presence of a link farm further indicates an attempt to distribute malicious content or engage in SEO abuse.

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.me/wix?keyword=mechanical+behaviour+of+materials+courtney+pdf In PDF document text
    • http://rabojede.pickertfamilyfarm.com/uploads/1/3/1/3/131380480/aa7af00201eaa4f.pdfIn PDF document text
    • http://files.boydssports.ca/uploads/1/3/0/7/130738504/naruse_pomones.pdfIn PDF document text
    • http://tupori.mucklaghns.ie/uploads/1/3/1/1/131164250/vewarowe.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/1/0430/9663/7597/files/free_html_college_website_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6753/0657/files/kijugalebosuxene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/jubabibob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/29953294790.pdfIn PDF document text
    • https://deea319d-bf92-4acd-8266-5f79628cf327.filesusr.com/ugd/27135d_4d7b878c550f49af8533a6fb779cdf7e.pdf?index=trueIn PDF document text
    • https://8e266860-8bb3-4b13-8ceb-635b2bf54ffe.filesusr.com/ugd/bf0735_1f85954f557141138ec527ab12845f62.pdf?index=trueIn PDF document text
    • https://5c5b5009-ed0e-4cfd-a590-bf7403f9b5f9.filesusr.com/ugd/564d2e_a887dd9899b343aa97d19b662485a4f2.pdf?index=trueIn 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

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
font_00_sfnt_off00004918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4918 5584 bytes
SHA-256: 4e5758e8cdbec66d2589545312450ba53f4b6360414884b66fab706122911071
font_01_sfnt_off00005be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE5 9836 bytes
SHA-256: d9fd315047133dc635b3d02a168f2ab2232920e1c45e3f58e98fbd0a6dcb0ae4
font_02_sfnt_off00007d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D84 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.