Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e8d1ee444b4fbb…

MALICIOUS

PDF

58.2 KB Created: 2020-09-23 12:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f6793d1b81eb213710fb63808e8f061f SHA-1: 3095938b8e5bc22ed6ae8282040a06162fcafecf SHA-256: 44e8d1ee444b4fbb04c17a8d750d6f3985d7673a5ccd3452a54f97e5a5d4f293
184 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.me/wix?keyword=%25E0%25B9%2580%25E0%25B8%258A%25E0%25B8%25B4%25E0%25B8%2594%25E0%25B8%25AA%25E0%25B8%25B4%25E0%25B8%2587%25E0%25B9%2582%25E0%25B8%2595+%25E0%25B8%2595%25E0%25B8%25A3%25E0%25B8%25B8%25E0%25B8%25A9%25E0%25B8%2588%25E0%25B8%25B5%25E0%25B8%2599+2561. The document's structure and content suggest it is designed to lure users into clicking these links, likely as part of a phishing or scam campaign. No scripts were extracted, but the PDF's nature as a link farm is a strong indicator of 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/wix?keyword=%25E0%25B9%2580%25E0%25B8%258A%25E0%25B8%25B4%25E0%25B8%2594%25E0%25B8%25AA%25E0%25B8%25B4%25E0%25B8%2587%25E0%25B9%2582%25E0%25B8%2595+%25E0%25B8%2595%25E0%25B8%25A3%25E0%25B8%25B8%25E0%25B8%25A9%25E0%25B8%2588%25E0%25B8%25B5%25E0%25B8%2599+2561 In PDF document text
    • http://files.tieabowfineart.com/uploads/1/3/0/8/130874143/14a35a9b6.pdfIn PDF document text
    • http://files.2findyourhomevps.net/uploads/1/3/0/7/130775528/fae25bb030.pdfIn PDF document text
    • http://files.anthonymichaelscatering.com/uploads/1/3/2/6/132695329/2282613.pdfIn PDF document text
    • http://kemir.theweddingcentrenuneaton.co.uk/uploads/1/3/2/6/132682883/loxegukodatokinat.pdfIn PDF document text
    • http://pijim.metalexpressions.com/uploads/1/3/1/4/131406062/9556096.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://57c67934-80cf-4c66-8a69-569b53838d04.filesusr.com/ugd/7b00a0_be90b52da31e4a3083ea9605147821f7.pdf?index=trueIn PDF document text
    • https://ab48159f-50e2-4641-9239-c062014fc56f.filesusr.com/ugd/4b7290_515b30bed2554535bb183404f8696c7b.pdf?index=trueIn PDF document text
    • https://d132419f-99a4-4b4d-9a2f-fed1d8974f97.filesusr.com/ugd/110ef3_543c1abac54a4204961c63413464cc53.pdf?index=trueIn PDF document text
    • https://1e3a4551-0be4-441d-acfd-20b51a937526.filesusr.com/ugd/fd30ac_a1695adf36604bd79806c47cb0423b57.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/platform_shoes_for_womens.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/86448314191.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000086ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x86AB 18372 bytes
SHA-256: d074f1512419b4dba9ce51617a89a0ef6f0bdeeab403979997172353ad5d28e1
font_00_sfnt_off00006014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6014 4528 bytes
SHA-256: b9348c3f82f65a73fe008bbef218aa4cbefc3c0f3e65a082117ac0afeca67917
font_01_sfnt_off00006f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F99 8656 bytes
SHA-256: 4de094aab3dcef866386fb606780542e2a5385442c9e369aa35c6dab6505b8ec
font_03_sfnt_off0000b7f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7F5 9404 bytes
SHA-256: 095019f4e83b83c47a60eab9d0ce89177d869abc8d1e1a71d091dbe7e5668d9c

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