Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad003e336277457f…

MALICIOUS

PDF

202.1 KB Created: 2020-10-25 09:46:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2bfc8cfe07662e4af3570727a05de6fc SHA-1: dac426c7351a13ed83287ef9ed14ec97b29696c8 SHA-256: ad003e336277457ffc19b212bb7d60efed71137b558bb832234f45abd7abdd2a
102 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/123?keyword=idsa+diabetic+foot+ulcer+guidelines In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378379/normal_5f8d572b82917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374522/normal_5f8af2a5e7024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f88d4132723a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384463/normal_5f8cf7d5e0b4a.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/fofeguj/51859681467.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/surah_al_waqiah_terjemahan.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/karalowodoj.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/kptcl_recruitment_notification.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/jejebixakadudodoxemiwib.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/firabogamorofi.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/11489257807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/89352535036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4839/4143/files/59377990477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8936/7718/files/the_chariot_tarot_love_feelings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3819/1015/files/neutrino_apk_uptodown.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/android_emulator_pc_pokemon_go.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/4_elements_monk_5e_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2032/0409/files/pathfinder_magical_knack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8738/9087/files/merits_and_demerits_of_information_technology.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_off0002de8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE8C 5264 bytes
SHA-256: 212b9389c8522f91bf77d19d246e56e1cc287af8425b4281d9c89c9c8d602b68
font_01_sfnt_off0002f07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F07E 12560 bytes
SHA-256: 41aaea4eb6d83eefca894778eab6a2ecd6842279b4433ab7895e10f439ece2cd

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