Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45af79c9342d90f…

MALICIOUS

PDF

45.3 KB Created: 2020-08-11 19:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1bc3406d6db07fe6773123578e58ae1 SHA-1: f835df59d3105f77c66f7d2c1ee0cf37222ada78 SHA-256: f45af79c9342d90fa9a54a854fb15ad0b66edb08e46bac456e743d935fc10d8d
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to direct users to malicious content. The document body, though partially corrupted, includes the text 'Materi akuntansi keuangan daerah pdf' and the malicious URL, suggesting a lure for users searching for such materials. The presence of numerous embedded links, many pointing to Shopify, suggests a tactic to obscure the malicious redirector and potentially leverage benign-looking domains for initial distribution.

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.com/pify?keyword=materi+akuntansi+keuangan+daerah+pdf In PDF document text
    • http://bewixoso.inter-clubtennischampionships.com/uploads/1/3/1/3/131380213/6124933.pdfIn PDF document text
    • http://nawutal.tcislibrary.com/uploads/1/3/1/4/131438216/ccef63a4d1d75.pdfIn PDF document text
    • http://files.usstheodoreechandlerlettersfromasailor.com/uploads/1/3/1/3/131398428/nubowosagixube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/44516069638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/73386162674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/dipofuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/ammonia_solution_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4615/6960/files/98614070010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/minecraft_ftb_launcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/66623420055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9973/2633/files/kubaxikukivatesawuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1991/7719/files/java_applet_programming_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/41061757219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/simavawawabikirijaleto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/57992383144.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 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6697 5112 bytes
SHA-256: 7fcf50f50511b466c94f1d731196d99b32bc90a71a9f1b5e3b780deaaccc1efc
font_01_sfnt_off000077f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F0 9940 bytes
SHA-256: a7ff79d72598e3fc45cbd6ecf3b8aba864f7d13d59fb63d2a8f99149ac6bc691
font_02_sfnt_off000099c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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