Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d5913f3a555d737…

MALICIOUS

PDF

64.8 KB Created: 2020-07-27 06:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f02ee410659c55bc48bbb2c37a79285c SHA-1: 59ba37efdc26596af6a7195becfe8b06840f6c0b SHA-256: 8d5913f3a555d7379ab148722e8052bf81f984ff0ebbfad883085bca23c090dc
194 Risk Score

Malware Insights

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

The PDF contains a link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'Informatica interview questions'. The primary attack vector is likely a user clicking the malicious link, leading to further compromise.

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=informatica+interview+questions+and+answers+for+experienced In PDF document text
    • http://files.clarendonoutpost.com/uploads/1/3/0/7/130775441/dawalarexel.pdfIn PDF document text
    • http://files.pierremichelsalon.com/uploads/1/3/1/4/131483184/vukorisewatakine.pdfIn PDF document text
    • http://files.shinytwo.com/uploads/1/3/1/0/131070888/9589e69984.pdfIn PDF document text
    • http://files.mmac.org/uploads/1/3/1/1/131164174/povaxiti-zuzovexasuwelaw.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/1/0436/2331/7662/files/7960839631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/xorusizowave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43561311815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/70875940182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/jolelagetuvewuzafekajesiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/zanosafefalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/fezobemeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3045/2123/files/dilanoranuroda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/bebar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/riputonogidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4634/6658/files/69875943330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/14003495641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/pojogunegazozexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2014/7095/files/roxijubewijukuzupujuvutu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF75 5432 bytes
SHA-256: 1f32b13cf6bbd141504d98bdc2992cc4512bf63cfac74b62cbda15ff81f4e245
font_01_sfnt_off0000d1e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E1 10356 bytes
SHA-256: 6de341da43b4e01774a3ce85b903fc91863110a29b8c9dbed395ad940923e926

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