Malicious PDF — malware analysis report

Static analysis result for SHA-256 466d221a35276b62…

MALICIOUS

PDF

46.7 KB Created: 2020-08-20 16:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f150692ff5b59f01afbe4058467812a5 SHA-1: 58a4e0381b88fbbb8de3821a88fe44778daf0161 SHA-256: 466d221a35276b62161b2539a1546cd445fd8d28c03762f1bedd5b7676ad712f
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Grignard reactions practice problems with answers pdf' and a URL pointing to a redirector. This suggests a phishing or social engineering attack aiming to direct users to malicious content.

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=grignard+reactions+practice+problems+with+answers+pdf In PDF document text
    • http://files.punchlistms.com/uploads/1/3/0/8/130873922/xopidat_gakake_nenezavepos.pdfIn PDF document text
    • http://files.groveplaymakers.com/uploads/1/3/1/6/131607630/7819891.pdfIn PDF document text
    • http://zifag.rarebreednationllc.org/uploads/1/3/1/8/131856158/a069ae4.pdfIn PDF document text
    • http://gilik.corydixon.com/uploads/1/3/1/1/131163635/pibomilosomujugon.pdfIn PDF document text
    • http://jufowuxij.michellewardfinearts.com/uploads/1/3/0/7/130738970/benobudi.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/1/0438/4571/4077/files/71198153036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8872/2587/files/biological_soil_and_water_conservation_measures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/59135437973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/wuwote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/54189266890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/2019_tamil_movies_in_isaimini._com.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/wilixezuwafarovubitimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4397/0463/files/borarorepufovomeruzar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/19201158488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/ligikeboxota.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7777 5832 bytes
SHA-256: 55ac65b9fe2939efedbf85488bba8bc026ccba4c4b705c1e233add0d1cc1915f
font_01_sfnt_off00008b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B32 10028 bytes
SHA-256: 6245c6d2cf9ef39f74d95e994aaa616eaf6883dff252ec5c925447b34f14ff20

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