Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4e19f1e97873d5…

MALICIOUS

PDF

49.8 KB Created: 2020-08-18 20:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54415562e636f07b87e2ff31683fa486 SHA-1: a3b7a81273b323f66c12194cae8fa0a9a2f1287c SHA-256: 1a4e19f1e97873d52750e2c8066e0137416a6d8cd807c8814fa77624132e28c4
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to external resources, including a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for academic content. The primary heuristic indicates the PDF is a malicious redirector, attempting to send users to harmful sites. The presence of multiple Shopify-hosted PDF links suggests a link farm or SEO poisoning tactic to disguise malicious intent.

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=common+features+of+bantu+languages+pdf In PDF document text
    • http://motavegi.azshareit.com/uploads/1/3/0/8/130874247/2962485.pdfIn PDF document text
    • http://files.detroitchamberorchestra.org/uploads/1/3/2/6/132683137/lulabalug-mibowos-wolitidixavowe.pdfIn PDF document text
    • http://vuzapif.brightdoxies.com/uploads/1/3/1/4/131453453/3c387a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7273/2825/files/zepipokawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3809/3990/files/brown_s_nautical_almanac_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6960/files/26784311869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/xuvure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3255/9263/files/rexawixofiduviwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0528/files/54483696484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/servsafe_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5921/4496/files/ikea_pax_wardrobe_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/alien_swarm_pc_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/golalebilafofuzugetuvi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00006ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDB 5404 bytes
SHA-256: dd5698ac42b9b7beb40accd83468ee61ae5b4e67a3721cf74e190c0a32d34f7c
font_01_sfnt_off00008018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8018 10824 bytes
SHA-256: 54271996de40b3e4d1b484e61566559d43ec5f04295fa6580552251f4eafaddf
font_02_sfnt_off0000a546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA546 16144 bytes
SHA-256: 0ac7c3374b05c7f503ea1e1306be6d1b38d4f84cef18590183456b3168b0763b

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