Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf0d0fd1487e1b0…

MALICIOUS

PDF

75.4 KB Created: 2021-03-11 19:25:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: f401ec4f15768de61808602e80a3ba47 SHA-1: 0cc80ae977cf4312bcaa74888490fe77e2004af4 SHA-256: adf0d0fd1487e1b07b7c271220fde3bcf9c77b9b2ef8479943358aadaea844db
66 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many pointing to disposable or unknown domains, suggesting a link farm or phishing attempt. The ML classifier strongly indicated maliciousness, and the presence of external URIs further supports a malicious intent to redirect users. No scripts were extracted, but the document's structure and embedded links are indicative of a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/award?keyword=aphis+fabae+life+cycle+pdf PDF link annotation
    • http://eroganoficial.site/fujitsu_document_scanner_fi-7160_price_in_indiab3dog.pdfIn PDF document text
    • http://stopro.store/android_studio_learning_curve53bwk.pdfIn PDF document text
    • http://xibiselid.medianewsonline.com/vowimolowologadole.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472501/normal_600a113988ac6.pdfIn PDF document text
    • http://hot-money.fun/92775023204kyxlv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412894/normal_6028885f1d905.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/kowazuk.pdfIn PDF document text
    • http://tijoxuxiga.iblogger.org/causes_of_the_american_civil_war_worksheet.pdfIn PDF document text
    • http://gatorama.site/rumugidotekepekedisexopugnp7fj.pdfIn PDF document text
    • http://pedaxofanor.mywebcommunity.org/70855750514.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376610/normal_6008cf378c5b5.pdfIn PDF document text
    • http://hotloveme.online/d_d_animal_companion_sheettv5w9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494452/normal_600a1bfc188d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wajalapivibobi.epizy.com/simple_love_obito_sheet.pdfIn PDF document text
    • http://fujirezidixivu.rf.gd/can_detox_make_you_lose_weight.pdfIn PDF document text
    • http://pobipegosaba.epizy.com/how_do_you_reset_a_motorola_android_phone.pdfIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_266f4a44d06644f1ae5ce7bad27357a4.pdf?index=trueIn PDF document text
    • http://joketatam.epizy.com/most_beautiful_nature_images.pdfIn PDF document text
    • http://napepezubebefiw.epizy.com/backtrack_4_free_64_bit.pdfIn PDF document text
    • https://32e47638-7206-44c1-ad53-5c6f9176402e.filesusr.com/ugd/e00742_b9003ec32ef94079941563137e37ea6d.pdf?index=trueIn PDF document text
    • https://01c4c9a3-ee74-4db9-a65d-799443b8dbf1.filesusr.com/ugd/a64c8c_0822d33c9dfb4ce897354481ca7c6e05.pdf?index=trueIn PDF document text
    • https://2ac56fc1-f7ee-4366-9cb2-1681469c68ee.filesusr.com/ugd/b914b5_3f9ab11ec1c247769a85c6bf7e9aca62.pdf?index=trueIn PDF document text
    • http://lezegunotoxom.rf.gd/60500223025.pdfIn PDF document text
    • https://c2093f15-f4fb-4bda-9582-db5404103fa6.filesusr.com/ugd/b28561_ce95cdb5719e4b7bacd56851cb199c9d.pdf?index=trueIn 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_off0000eaad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAD 5380 bytes
SHA-256: a03416ed7abea0addfc536e0b238e28b266fbcb0e031e1ca27d8022726ecd2be
font_01_sfnt_off0000fcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFC 10344 bytes
SHA-256: 1795066f4caf8b625009688cb9a822a290ee343e84a28ef42cb2eea8080608f0

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