Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc9f7dff444dbec7…

MALICIOUS

PDF

40.5 KB Created: 2020-08-18 12:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c553b53be82fa3239b0b1692bda8c2a SHA-1: 4e9848476f72636f4c98b65223487628025efd06 SHA-256: dc9f7dff444dbec7e2054af148c5bab2f7439719b621b94a1a95ff0623105106
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Use wifi on airplane mode android' and the malicious URL itself, suggesting a social engineering lure. The presence of a link farm indicates an attempt to distribute malicious content widely. No scripts were extracted from this sample.

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.ru/pify?keyword=use+wifi+on+airplane+mode+android In PDF document text
    • http://gagabob.maconcountyveterans.org/uploads/1/3/1/4/131410685/d75a307e6b875b.pdfIn PDF document text
    • http://files.briannabelmonte.com/uploads/1/3/2/6/132682731/vopagazajis_tewebupujoj_removefoxo_radunuzaberada.pdfIn PDF document text
    • http://zivib.bensalmon.org/uploads/1/3/0/8/130814328/zukunez_kozemumo_sipibumeginako_lagojon.pdfIn PDF document text
    • http://bilol.selimmawad.com/uploads/1/3/2/7/132740249/kojobid_bemivavi_bidasisina_rukuserevefe.pdfIn PDF document text
    • http://files.mathtvcourses.com/uploads/1/3/0/8/130813988/tuveworu.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/1/0437/6150/0309/files/dijeluviwerikejejunenelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/72954421421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/83776041342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/lejagina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6251/0236/files/carrier_psychrometric_chart_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/dexowavino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/nightmare_before_christmas_live_wallpaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6304/9378/files/31866492157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/role_de_l_appareil_urinaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/florida_class_d_security_license.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

Related samples 8

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_off00005fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC1 5268 bytes
SHA-256: 411d5c570e9a23378db81376d9a466824af303c6f54bce20f35e7a1c9f209033
font_01_sfnt_off000071a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A5 10364 bytes
SHA-256: 267224dcfd3ab5e20d72c0a740d4c6f969980e29c5d3abc7163fd9e5c54d072c

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