Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c05bcad485d48da…

MALICIOUS

PDF

40.2 KB Created: 2020-08-18 14:05:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5890269d6f78f5406eb34d971cf35ef5 SHA-1: 71162a766cebacf1771a286d75371ea6e9dd64e9 SHA-256: 1c05bcad485d48dab0fda267359581650553329dad866ae4c599e6bda92509f3
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple embedded links, including one pointing to a known malicious redirector. The document body text and heuristics indicate a social engineering lure, specifically prompting the user to install a browser update or extension. This is a common tactic to trick users into downloading and executing malicious payloads or divulging credentials. The presence of numerous links, including a link farm, suggests an attempt to manipulate search engine results or distribute malicious content broadly.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=google+chrome+for+win+7+ultimate In PDF document text
    • http://dememag.barnetselfstorage.com/uploads/1/3/1/4/131407148/fosufeferevapoluja.pdfIn PDF document text
    • http://sufuwitet.danielnistico.net/uploads/1/3/1/0/131070722/mavijexosuzox-kebodor-vefimigiwalex-kutuf.pdfIn PDF document text
    • http://files.exquisitekreations.com/uploads/1/3/2/3/132303229/4a316adb.pdfIn PDF document text
    • http://files.functionalhealthcoach.com.au/uploads/1/3/2/6/132681836/2a4ad.pdfIn PDF document text
    • http://files.wilkinsonbrian.com/uploads/1/3/0/7/130740252/linokisexi.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/1/0430/7622/3129/files/mapipobagazale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/guforidanifisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/android_alarmmanager_one_time.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/soxotolebako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/78597538571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/body_beast_workout_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/strengthsfinder_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/zazibogafazedenasuweme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9607/files/dilevunukiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/mastering_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7200/2974/files/28670924357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/57804402975.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_off00005dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC4 5320 bytes
SHA-256: 83d65185913e3449b2f26baef0f79aec2c00bb25836b518572a3a21e659c9f7f
font_01_sfnt_off00006fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD7 10636 bytes
SHA-256: d9e39c644a6b33f5af02ca9d767180e00ae2c7c463f87c65766e754c90a18592

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