Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d323fe162f31a88…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 20:23:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee30dd9357941f95c879157e90b7f001 SHA-1: 8a66ecf47376600ad3a65ed53fa572e4fa2b7936 SHA-256: 3d323fe162f31a88fc67b50b4fe141884e393405b64f343ce5447ada857bca54
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of embedded links, many pointing to external PDF files. One of these links directs to a known malicious redirector. The document body contains text related to reporting accuracy and specificity, which may be used as a lure. The presence of a link farm and a malicious redirector suggests an attempt to drive traffic to malicious content, potentially for phishing or SEO poisoning.

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=reporting+accuracy+sensitivity+specificity In PDF document text
    • http://runavun.growth-ministries.org/uploads/1/3/2/7/132712237/d0ac9dd3.pdfIn PDF document text
    • http://files.hutchmade.com/uploads/1/3/0/7/130739348/ninesif.pdfIn PDF document text
    • http://files.yamawarashi.com/uploads/1/3/0/8/130874257/572234d6.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/1/0437/0412/3557/files/agriculture_urbaine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1814/8247/files/37167567759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8424/2325/files/nugapolapemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/80269125432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3594/1285/files/8389158320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/bank_exam_question_and_answer_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/cartoon_crew_song_pagalworld.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8296/3361/files/90024644284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/56766494287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/temaradibikimok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4790/3644/files/ansys_18_workbench_tutorial.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 6

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_off00006561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6561 5320 bytes
SHA-256: c142a59fab6758579328e8fef5da021e94cc59855b41d328e6a3d1a59655d5b1
font_01_sfnt_off000077a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A2 10228 bytes
SHA-256: 38e1159e03c2cefa9e8886c9ad7f79ebcbcad425b869768f11c5657a10c3e894

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