Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a22dccba43e58f…

MALICIOUS

PDF

48.9 KB Created: 2020-10-29 07:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 0493fa45be4d1036c6105b34a82f1cee SHA-1: 2b7a982424d885db1358f0acb64487ee8d2d5339 SHA-256: 04a22dccba43e58f113b4ffa01113ee19e2987668765917866ee21a1c2a22f06
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with heuristics indicating it's a link farm and redirects to known malicious infrastructure. The document body, though partially corrupted, contains a URL that aligns with the malicious link findings. The primary goal appears to be directing users to potentially harmful websites.

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://gettraff.ru/strik?keyword=plan+de+salvacion In PDF document text
    • https://lupilizeranal.weebly.com/uploads/1/3/4/4/134460298/560132.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1441493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_5f8c268ed9c3b.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/8561171.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f91adda33a48.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/e0eeb842ca1bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_5f8a90b439731.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/subud/42423464739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6310/7480/files/photo_editor_apk_free_download_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4818/8104/files/process_of_fertilization_in_plants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/0373/3158/files/users_manual_for_6th_generation_ipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6835/8301/files/wiripodetukokitoga.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/inches_to_centimeters_conversion_table.pdfIn PDF document text
    • https://s3.amazonaws.com/radaruropivoje/kidoziketise.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/75163460214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/3870/7359/files/fundamentals_of_computer_algorithms_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6776/8981/files/37901291254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0878/9150/files/86481029199.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/34278004648.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/anatomy_for_sculptors_understanding_the_human_form_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/aminoacidos_unam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/23305093437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/61072417649.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_off00007ef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF2 4900 bytes
SHA-256: 5e8ff3e292e8992049f6e13fcfa8b96f52ab2a5b4fae5da2b337ae551b1a7420
font_01_sfnt_off00008fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB8 12276 bytes
SHA-256: 3a8f797c86a14915e4ad2a21b5f63b46eb67d26aaeb240185eff116b0b61ae9a

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