Malicious PDF — malware analysis report

Static analysis result for SHA-256 021b41700ea3f5e9…

MALICIOUS

PDF

48.2 KB Created: 2020-08-28 01:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca3c710a59b9623895f84b221e1958cf SHA-1: 3f040d44accfe9dcf5217629e02cd1da34f5fd5d SHA-256: 021b41700ea3f5e9cce8f6f4e1d82379a22fabca65549b0baee6be9986d1561a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is identified as malicious. The document body, though partially corrupted, contains the same lure text and the malicious redirector URL, indicating an attempt to trick users into visiting a harmful site. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly suggest a phishing or malicious redirection attack.

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=metodos+de+conserva%25C3%25A7%25C3%25A3o+de+alimentos+esteriliza%25C3%25A7%25C3%25A3o In PDF document text
    • http://jowuso.bereczkei.hu/uploads/1/3/1/4/131438464/9474301.pdfIn PDF document text
    • http://files.marinacoveconsulting.com/uploads/1/3/0/9/130969790/9362066.pdfIn PDF document text
    • http://files.theoriginalfish4ideas.com/uploads/1/3/1/4/131411596/1072996.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/1/0434/2841/3607/files/patient._co._uk_gout_diet_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/gajemunujusegesozikivikib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0364/7912/files/set_timer_for_14_minutes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8458/6903/files/linux_shell_commands_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/safusolukurewasal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6943/1189/files/artificial_intelligence_and_machine_learning_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9131/3059/files/privacy_policy_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6472/8479/files/abstract_of_payment_of_bonus_act_1965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4197/2646/files/73793502293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2557/5581/files/phrasal_verbs_dictionary_cambridge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/kopifil.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_off00006bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFA 5488 bytes
SHA-256: 3013897e8319609316182d07e1f088575e3cdf1d2b985af9668ee5db5368d542
font_01_sfnt_off00007dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBA 12360 bytes
SHA-256: f3b40909354c65f7ac40bf1090df1cdbd5a43d4886e35411a5c34bd5a56c4ac5
font_02_sfnt_off0000a2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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