Malicious PDF — malware analysis report

Static analysis result for SHA-256 1043a15e7bbb88db…

MALICIOUS

PDF

48.3 KB Created: 2020-10-30 17:36:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22c3de3f8effb4d15671b259eac90e37 SHA-1: 78117b8eacbe073cd094e8fe27d42b0ecfe758d1 SHA-256: 1043a15e7bbb88db25df5ad20a371ddc96e8a39647b7641f24da3510bac0c407
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, indicating an attempt to lead the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or redirection scheme, likely intended to deliver a secondary payload or lead to a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/123?keyword=night+vision+scope+for+ar15
    • https://vixepakezo.weebly.com/uploads/1/3/4/4/134447938/dibulego-liwizoleg-kutepumemuwor.pdf
    • https://xigepeseforala.weebly.com/uploads/1/3/4/5/134508125/6a50cbd.pdf
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f8c5636c1887.pdf
    • https://cdn-cms.f-static.net/uploads/4383572/normal_5f8c489c386d2.pdf
    • https://woliwejimagevin.weebly.com/uploads/1/3/4/3/134319070/7677314.pdf
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/662261.pdf
    • https://cdn-cms.f-static.net/uploads/4374978/normal_5f8b76d5a05e1.pdf
    • https://pavaliwakugaban.weebly.com/uploads/1/3/4/3/134373235/wovobunotar_rozerusi_dufawokobomoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8f8865e0-d6ca-4d16-b33a-606e86189a6f/74487296544.pdf
    • https://cdn.shopify.com/s/files/1/0437/0061/7381/files/authors_purpose_activity_answers.pdf
    • https://cdn.shopify.com/s/files/1/0501/9651/2922/files/nuzozixevimifumoreso.pdf
    • https://cdn.shopify.com/s/files/1/0504/8382/2770/files/verification_and_validation_in_scientific_computing.pdf
    • https://uploads.strikinglycdn.com/files/27305a87-cee7-4a16-8fcd-994500add59f/letumuxebimaresorewol.pdf
    • https://cdn.shopify.com/s/files/1/0435/7308/4319/files/sylvanian_caravan_and_car_best_price.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dee.bin
26beb416011cf640c8eb221265127a9f2a3752e556a52128e688e140cc27461f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEE 5448 bytes
font_01_sfnt_off00009099.bin
a1f47098d22b4dc2a193bd37ac16095590fa48f4f1c363af450b6d34c5172176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9099 10432 bytes

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