Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fe685082e025d0…

MALICIOUS

PDF

74.4 KB Created: 2020-10-29 11:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ffdda25fad9b06adcea1e2fc06803c20 SHA-1: d20bf4d08c2f3e6b18091a5d5acabd0248b13221 SHA-256: d4fe685082e025d0809cdf1ab75894ad879a95ac9625a200e0fb1bdc9b072502
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and 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 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=formato+de+periodico+escolar In PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/dedf5a8a2.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/806879758e7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3761a2dc-588c-4e16-b9a0-4359eb954c92/jafegatedevez.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/rutumonudanolaniwagex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be8dc9bc-3655-4705-937a-0c2c9776824a/jomube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df023239-455c-43c3-84e8-f842283632c7/teveke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0d558b3-9ea4-4935-96d1-e3589b68fa26/the_tattooist_of_auschwitz_audiobook_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb5e479a-facc-4a5a-ad3f-f0d2596d51e0/28914714255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/457c3c22-e7fb-4c5e-9107-03317b8d230c/7660603705.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/finawipegasudavor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f186da58-06d0-42a2-8625-beec10b7e0b5/88658443315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d295ef1-b11a-4c7d-a464-32f025c71978/a_long_walk_to_water_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/66324986898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8723aa27-80a0-4abb-a44b-bce446500698/38775047603.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/download_biochemistry_book_by_satyanarayana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5d97135-4907-4ee6-a601-f1dd6dfe05eb/zufaxujemurovodazis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf0ef7e6-fc5a-43ae-a9fe-c4cee8698e6b/76441816787.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/47614192818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec7d6447-7ce0-4697-8b6f-83e9445b7cd6/duke_nukem_3d_genesis.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/negative_effect_of_globalization_in_ethiopia.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/nimobuvakefibebed.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/ibps_clerk_notification_2019_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21f405ca-9257-4c6e-863b-d000159ae8c1/hart_of_dixie_wiki.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_off0000e2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B7 5176 bytes
SHA-256: 0d436d5453b16472fb1eff6c6fe3a60713b57a5532e0579c79f8d4fef88e98e4
font_01_sfnt_off0000f436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF436 11820 bytes
SHA-256: 13ba9e2b081ec891812d203eadea010ae1ca02e5bef1ea0c8b0ad43b90ae015c

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