Malicious PDF — malware analysis report

Static analysis result for SHA-256 8517d8e5d7a06a9b…

MALICIOUS

PDF

42.6 KB Created: 2020-08-25 11:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2730cb162160d45e6262825e95b56a5 SHA-1: de35b8afc9a9447a67ab335a012b47815737b657 SHA-256: 8517d8e5d7a06a9bbb162eaab1f12fbc4522419fbddb445eb14fd48c7d2ae6f9
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The embedded URL and document body text point to a lure for 'imo messenger app android free', likely a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=imo+messenger+app+android+free In PDF document text
    • http://files.hoosiernaturopath.org/uploads/1/3/0/7/130739949/gifamefibumad.pdfIn PDF document text
    • http://jujebiv.helpmeimgettingmarried.com/uploads/1/3/0/7/130776445/rujusasukewajeweriwo.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/1/0434/9739/0244/files/gumeluvepitugotebofuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1466/8959/files/amadou_bamba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/80117793416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/womaloxiwinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5792/0677/files/championship_manager_2010_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/angioma_cavernoso_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/33953272813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8333/2773/files/windows_10_enterprise_1803_iso_microsoft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9060/0355/files/xewemolaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2002/4989/files/bomixamexusodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/apache_cassandra_upgrade_guide.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
🗂 Part of campaign: hoosiernaturopath.org 3 samples

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6913 5268 bytes
SHA-256: e5a61ce4de9a8df6e90efdb9c8db8c93098f0b6ddb4076f5515e2035e78b80db
font_01_sfnt_off00007ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE4 10216 bytes
SHA-256: 1e8f5781ef19b2f20061b769945b71c884d9d1f8bc214568570846f714cc01c0

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