Malicious PDF — malware analysis report

Static analysis result for SHA-256 45139669f8f8dedc…

MALICIOUS

PDF

42.8 KB Created: 2020-10-17 05:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ebecdfb97c33af7f9955566bf611a00d SHA-1: d6fdc8d8bfa64c366d6e5490c20a2cf74e9f7ddc SHA-256: 45139669f8f8dedccd2f09280beace38f19fb47073e0cf62c69ac97285d4b7f6
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure to download or view further content, likely malicious. The ML classifier also strongly flagged this PDF as malicious. The presence of multiple embedded links, including a link farm, further supports a malicious intent to redirect users to potentially harmful sites.

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.me/123?keyword=converter+pdf+em+imagem+hd In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/vunidixeviro_xitosujitupile_kadape.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/tobipabozutof.pdfIn PDF document text
    • https://fusesekomufe.weebly.com/uploads/1/3/1/6/131606177/lamexero.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/1/0500/1042/3487/files/polypose_adnomateuse_familiale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6946/4727/files/fumosokinasewopevefazunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6439/3367/files/wixenudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2187/1522/files/2929103631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b218d6-6aec-408e-8437-f10f7c718816/wakiletabamodufotager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5260cc28-050a-43be-94e3-72858ec948f7/junoludidow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81c943fd-6b28-4d0a-911c-f95ec24f3028/sofalupowolipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/611ebb8e-7aee-4f53-9ab9-02d050f6ac0a/sugoxurijurubupewubebaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9236/8796/files/annapolis_boat_show_promo_code_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/2173361255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9135/6568/files/falefozelexanu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6143771-8aed-4b8d-8d00-3839b13f0f90/90634136457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c25f5217-939b-45b9-baba-056765706ecc/falosuretiri.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_off00006805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6805 5212 bytes
SHA-256: bf36f9e900c045ae03897433be97b3280c7d2edd2c5f80fb1445eb0a75e4da4a
font_01_sfnt_off0000799f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799F 10660 bytes
SHA-256: 5bcb2a2dc14d65b7fb466270d7ea58b9792eeb55fb16fc53feafbbb33d59ddf7

Open this report in the interactive analyzer, or submit your own file for analysis.