Malicious PDF — malware analysis report

Static analysis result for SHA-256 61f4b558d3c1336b…

MALICIOUS

PDF

49.1 KB Created: 2020-10-08 08:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3852c7cb2982208c56565b748ab4863a SHA-1: fc867fab82b6539b5410eb1c92725bc9e30b7d4a SHA-256: 61f4b558d3c1336b3ff647ead540e95df7d212620666ec72a83e2f8290aa19c8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The primary malicious URL identified is 'https://ttraff.club/pify?keyword=www.graphicmaps.com+canada+answers', which is likely used to obscure the final destination and potentially deliver malware or phishing content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of malicious redirector infrastructure.

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 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.
  • 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=www.graphicmaps.com+canada+answers In PDF document text
    • http://tafiroze.katgaddis.com/uploads/1/3/0/8/130874601/ed4e03b5619a87.pdfIn PDF document text
    • http://mowugef.daytonatopagents.com/uploads/1/3/2/7/132740343/jigitoka-lunopojo-zuvuxupakejik.pdfIn PDF document text
    • http://fibeguje.codsallhistory.com/uploads/1/3/1/8/131871674/punekuluxeriwimuxam.pdfIn PDF document text
    • http://files.gethsemanelutheranchurch.com/uploads/1/3/0/8/130874678/kuziwagu.pdfIn PDF document text
    • https://site-1036993.mozfiles.com/files/1036993/kodajezelapesenuso.pdfIn PDF document text
    • https://site-1038558.mozfiles.com/files/1038558/48356596273.pdfIn PDF document text
    • https://site-1036946.mozfiles.com/files/1036946/77684466836.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/1/0435/5702/7992/files/wca_cheerleading_competition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/mejisugabuxefazabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6650/7942/files/unblocked_minecraft_download_at_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6470/8260/files/27758467290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/68555134605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4752/5786/files/78522477716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2240/3742/files/distributive_bargaining_is_characterized_by_which_of_the_following.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2002/1670/files/court_in_the_crucible.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_off00007684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7684 5592 bytes
SHA-256: ef4f0ab865bc7da89dd720fe14082c60d88a981319134f104771558462687ab7
font_01_sfnt_off0000897c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x897C 14900 bytes
SHA-256: fc8e61ed216645521da01cbff466e3ac4a30016edcac3069ce9fc078c417f2a3

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