Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd029475add95468…

MALICIOUS

PDF

40.4 KB Created: 2020-10-02 12:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5b83457fe3a1915b16ee2f4860fe0fcd SHA-1: 3357dd09af3e43a4a3535710fe5b3e7844dcb323 SHA-256: fd029475add9546846cc01323f9717e1ae60f80276d54b68397b4d6e33afefe4
124 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/pify?keyword=neocutis+eye+cream+before+and+after', indicating an attempt to lure users to malicious content. The presence of numerous links on disposable hosting further supports a malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.club/pify?keyword=neocutis+eye+cream+before+and+after In PDF document text
    • https://site-1036958.mozfiles.com/files/1036958/14528123925.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/jubalasobevugadibubaton.pdfIn PDF document text
    • https://site-1036692.mozfiles.com/files/1036692/67429741659.pdfIn PDF document text
    • https://site-1036828.mozfiles.com/files/1036828/soruruzojumaf.pdfIn PDF document text
    • http://files.bearcatwrestlingclub.com/uploads/1/3/1/3/131384468/rusinojabat.pdfIn PDF document text
    • http://files.judehayes.com/uploads/1/3/0/7/130739344/3641726.pdfIn PDF document text
    • http://files.threetreerecords.com/uploads/1/3/0/7/130775606/gironixi.pdfIn PDF document text
    • http://files.brewwtravels.com/uploads/1/3/0/9/130969755/2425869.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/1/0433/7133/1734/files/3590559326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6668/3292/files/chrome_safe_mode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0711/4916/files/pandora_apk_unlimited_downloads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/bamoloxuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86b01415-fa48-4a2f-9b26-636f80995d30/1207852417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e494b027-757c-4417-b440-00d542192a86/tosujeturomilefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b424a3f3-1663-468f-9985-d1b49c0f3c7f/29686037749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f4449e0-6657-4f8d-8c8f-9ee7dbacc61c/nemalub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23f18217-b8e8-447c-9c33-6254cc7af327/susisofomufuvizewebodiv.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_off00005d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D58 5344 bytes
SHA-256: 8cb4c3e06a90c650badc27345be6e71935f9e00432dffcbe2760da5134fb1924
font_01_sfnt_off00006f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 10672 bytes
SHA-256: 399ca16abdf859a80b9ba0a02545db179deb6105764f3b4247589c065806347b

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