Malicious PDF — malware analysis report

Static analysis result for SHA-256 f285bd062e2fec2c…

MALICIOUS

PDF

50.7 KB Created: 2020-08-11 20:30:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e55a849c919f6fefdbf2d91c719b898b SHA-1: f5b794ca04a31181675d06c0ee651e647bee0aed SHA-256: f285bd062e2fec2cc23c447ed702e10b57ae19647632e849876d6b8192cdf6b7
194 Risk Score

Malware Insights

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

The PDF document contains a link disguised as a maintenance manual for a Dell Latitude E6420, which redirects to a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF structure includes a large number of external links, many of which are hosted on Shopify but point to potentially malicious content. The primary malicious IOC is the redirector URL.

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/wb?keyword=dell%20latitude%20e6420%20maintenance%20manual In PDF document text
    • http://files.nxtgenerationenergy.com/uploads/1/3/1/3/131383664/a04a74e2586.pdfIn PDF document text
    • http://vulelegit.eternal-roots.com/uploads/1/3/1/0/131070450/90f917.pdfIn PDF document text
    • http://wolana.izzysfrozenyogurtandicecreamnh.com/uploads/1/3/0/7/130739777/1999183.pdfIn PDF document text
    • http://vopopoze.time2shinehypnotherapy.com/uploads/1/3/1/3/131379578/migirivate.pdfIn PDF document text
    • http://files.jawsjournal.com/uploads/1/3/0/7/130740490/vesiwoguziwewil.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/1/0428/1679/8883/files/tejarozotabifajojor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/9069092902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/dotilibesefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7182/files/maths_formulas_free_download_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/17698931182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4668/files/latin_american_liberation_theology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/ankle_brachial_pressure_index.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6797/3538/files/analisis_dimensional_en_mecanica_de_fluidos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/xipozimunujepulotebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/megoxakaxodunakonusapu.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 4

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_off00007f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F85 5324 bytes
SHA-256: 621004f6e628e19e9f54e4dc640c3ca7a5a762e9e480e365b8f941e68b331ef0
font_01_sfnt_off00009197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9197 14160 bytes
SHA-256: 9604ef9bbbebdde97777b0658818efa276bf9c5e1e5359fd3c99ef422535d235

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