Malicious PDF — malware analysis report

Static analysis result for SHA-256 74096dacbeef2c3f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-07 07:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 889fafa56276adac070b2f1136bff762 SHA-1: b132b606dbdb879d932c2bede0c59c83b8847707 SHA-256: 74096dacbeef2c3fd647547fd46a1472c27124fdb59e03b2928ec0cf1aff9598
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains text suggesting it is an IELTS writing answer sheet, likely a lure to encourage users to click the malicious link. The ML classifier also strongly indicated maliciousness.

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=ielts+writing+task+1+and+2+answer+sheet+pdf In PDF document text
    • http://files.j2theson.com/uploads/1/3/1/4/131453847/pomado-lebigizilifefi-jenovixuxa-joziku.pdfIn PDF document text
    • http://files.unnatinarang.com/uploads/1/3/1/0/131070212/3238589.pdfIn PDF document text
    • http://files.flyingelmer.com/uploads/1/3/1/1/131163960/mugotiv.pdfIn PDF document text
    • http://files.theyogaschoolny.com/uploads/1/3/0/7/130775942/668541.pdfIn PDF document text
    • http://files.exsanguinationsignet.com/uploads/1/3/2/7/132712483/bogululuvaxafogime.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/1/0433/0687/7080/files/lorabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0138/7936/files/32907421049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2873/4375/files/jerofilejajibulakemot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/calendario_2020_con_festivit_italiane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8164/4697/files/list_of_pokemon_by_national_dex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31443612403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4125/9671/files/august_2020_current_affairs_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7727/files/12319595456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8427/4081/files/54123139093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/how_to_mod_a_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5766/7487/files/mcgraw_hill_4th_grade_math_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/munuxutumiwimisaluga.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 8

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_off00006f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F80 5580 bytes
SHA-256: adef52269d74ec05c9eca0a7e583ae6122ddcceec67b4652488c0b9dc0262620
font_01_sfnt_off0000828f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828F 10740 bytes
SHA-256: ead637e82b322a80c97771f74342f4eefb71d632d6ea88429fd3c18eaceb679e

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