Malicious PDF — malware analysis report

Static analysis result for SHA-256 488c0d32f00e92cd…

MALICIOUS

PDF

39.5 KB Created: 2020-08-14 02:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb79091c4fa32e0181186b381d513cc2 SHA-1: 0d088c84cc9f9351e9e1df2e222465617c5c1c65 SHA-256: 488c0d32f00e92cdc6f523b6a98de9096dc56a6a7f737df0cabe451f75f9905a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'fighter aircraft simulator games' and the malicious URL. This suggests a social engineering lure to trick users into visiting the redirector, which likely leads to further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=fighter+aircraft+simulator+games+for+android In PDF document text
    • http://sedobud.pinckneywrestling.com/uploads/1/3/1/4/131453870/jezesexi-gozovosepabave.pdfIn PDF document text
    • http://files.bubbleytrinkets.com/uploads/1/3/1/4/131452750/topilexup-kuzaluvufujox.pdfIn PDF document text
    • http://vikidawap.indigoroadstudio.com/uploads/1/3/0/8/130814328/sekinasivumukukoneg.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/1/0434/1334/0312/files/22362867815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4834/5500/files/bizepajas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/wakisagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/resozelofik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/7839/7607/files/mijarisevuzivumepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/govomerusiliveliveses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4230/3140/files/inorganic_chemistry_atkins_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/52534073631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/morphing_mod_1._8_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/carrier_mini_split_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/lipejopebeseworuvekazusez.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_off00005bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC3 5392 bytes
SHA-256: 5221ec403846a2de20e81a3d945180e65f9321af36d6b474bc23566fec2d5211
font_01_sfnt_off00006dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFA 10152 bytes
SHA-256: c680d152ce2d8fb2a20f21cec245ae2fc26737d729f0334a357599f3c699685f

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