Malicious PDF — malware analysis report

Static analysis result for SHA-256 146486cba42b2eb5…

MALICIOUS

PDF

47.5 KB Created: 2020-08-27 18:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2939d811155ffc0c5b3256b6a17d7e04 SHA-1: 7c0e391f022555c077190f9ccd2f60297ec15d93 SHA-256: 146486cba42b2eb59ba3225a5b1eac4fccffe391ff4817a8bd37690e9ee064e1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to 'units' and includes the malicious redirector URL. This suggests a phishing or malware distribution attempt, likely delivered as an attachment.

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=diferencia+entre+unidades+fundamentales+y+derivadas In PDF document text
    • http://files.31lab.nyc/uploads/1/3/1/4/131409909/mokasixigu_regor_nuvovoraxitumen_pevarigurozelir.pdfIn PDF document text
    • http://files.culhamafterschool.com/uploads/1/3/0/9/130969357/7625555.pdfIn PDF document text
    • http://files.alicelynn.com/uploads/1/3/0/7/130775544/7487438.pdfIn PDF document text
    • http://files.jordanpriceart.co.uk/uploads/1/3/1/4/131437174/99b96cd2e6.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/1/0428/6464/0159/files/juruwadujamitokotulofak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/alien_worker_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/2807765022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98559129476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0718/6843/files/fuxugizufifasakunafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/jizitimuzezewojokef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8888/5400/files/divinity_original_sin_2_rykers_keller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/44690682666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/kesotebelasutigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7795/9833/files/juxaloxemegipumudufip.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 6

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_off00005f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9E 5100 bytes
SHA-256: 5a9de30a680114a66306f2b64b4f575106843144701ba67acf99446bd8b1409a
font_01_sfnt_off000070e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E7 15892 bytes
SHA-256: df2e4964121ae309bb3d6d4e5c127ad972e844036e52560e029502b28ec009fa
font_02_sfnt_off0000a0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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