Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa9c3bab2e37eac…

MALICIOUS

PDF

64.2 KB Created: 2020-08-14 10:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c26668593dafe749c2e8a887413b3cb SHA-1: c5d9b9fc6810260c311a9cadd4e891e76e9ca990 SHA-256: daa9c3bab2e37eaca7391ecc03eacad2dbffe2201a4826de6cc3ed8e4b04670d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the target URL, suggesting a social engineering lure related to the Bhagavad Gita. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger link farm, likely for SEO manipulation or distributing malicious links. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bhagavad+gita+chapter+12+pdf+in+sanskrit In PDF document text
    • http://files.weox.club/uploads/1/3/1/3/131379615/3b71a97c.pdfIn PDF document text
    • http://files.fortwinnebagosurgeonsquarters.org/uploads/1/3/1/4/131483154/guwarelevuzux.pdfIn PDF document text
    • http://files.alphaeta42.com/uploads/1/3/0/7/130738696/2675379.pdfIn PDF document text
    • http://files.rainbowhomecareservices.com/uploads/1/3/1/6/131607163/4d530eee66d.pdfIn PDF document text
    • http://files.cititermitecontrol.com/uploads/1/3/2/7/132740553/5325484.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/83147317463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2139/4343/files/kusirizinuzijupaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0897/5263/files/ncert_books_class_6_maths_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/jibegivevofigikaweviref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2423/4149/files/autocad_underlay_print_quality.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2066/5510/files/owl_ontology_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3360/files/restriction_enzymes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8516/6760/files/xosew.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D2 5740 bytes
SHA-256: 1b81e13606840f9847313c9edd52905ed4509e6047165048980e71a4864c97e3
font_01_sfnt_off00009a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A68 15416 bytes
SHA-256: 9aa52295e760b79732aca32519c417089384c05fec73e430c72ef7eb6d844d40
font_02_sfnt_off0000c7bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7BD 14116 bytes
SHA-256: 6e155948293c21dda574d76a3e16c36723650a732dba82f0b51beb2f2aa65e1a