Malicious PDF — malware analysis report

Static analysis result for SHA-256 1807b954717e3bca…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 02:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a20976d1273cd68546180336ee1ecbc SHA-1: 81d961f2e3c8a110df43734114f6470b1eac2725 SHA-256: 1807b954717e3bca3dd75b7bd71ce008e6145a634b7364b9ae72dc18c17fe6c5
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to a phishing attempt disguised as a printable calendar. The primary malicious URL, https://ttraff.com/pify?keyword=calendar+2020+malaysia+printable+pdf, is used to redirect users to further malicious content. The ML classifier strongly supports the malicious verdict.

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=calendar+2020+malaysia+printable+pdf In PDF document text
    • http://files.mayohayeslibrary.org/uploads/1/3/2/6/132681812/divizofe_kilolinepuna.pdfIn PDF document text
    • http://rajiju.rottensocks.com/uploads/1/3/1/3/131380158/4013711.pdfIn PDF document text
    • http://files.bealegacybuilder.com/uploads/1/3/0/7/130775350/1501f.pdfIn PDF document text
    • http://dalefufi.dancersinkaz.com/uploads/1/3/1/4/131453329/41e0a.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/1/0430/7543/6705/files/39476492291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3157/6231/files/apexogenesis_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/exploring_chemical_analysis_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/91987313519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/sakafifojivapusado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/bubukimupapovotukuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/john_r_taylor_classical_mechanics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6403/2422/files/jovubibeduxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/buxeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/55833121988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/mijunivopoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/8529439237.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C1 5404 bytes
SHA-256: 2cfc7f13a375a6c96f8b6976d0dff6cc782bd5c13bbe7c5cae22817fd0ffa472
font_01_sfnt_off00007c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C03 10080 bytes
SHA-256: 874450676efb21cbcb3d8acb41575ec9a3fbc8af2f2fae13be419ea60da3890c
font_02_sfnt_off00009e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E84 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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