Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eacff28a8f968ef…

MALICIOUS

PDF

78.4 KB Created: 2021-03-12 13:31:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 52dde398e923da9c879420a61a4f52e2 SHA-1: 3aad7b251e7c8908f6865b674003833185261253 SHA-256: 9eacff28a8f968ef912d3c8662e30eaa8b634182a8959a9b4502ce5a7be528a9
66 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. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/strik?utm_term=how+to+set+sony+alarm+clock+icf-c318 PDF link annotation
    • https://cdn.sqhk.co/zetobazox/4Nicgjj/sadaraxuwugawexur.pdfIn PDF document text
    • http://regse.website/327776793204r278.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/tULjchb/rotten_teeth_falling_out_dream_meaning.pdfIn PDF document text
    • http://getsalon.xyz/13414824543p3o6n.pdfIn PDF document text
    • http://zoom-omsk.ru/fur_elise_piano_sheet_letters77zzm.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/jggggjQ/11735877959.pdfIn PDF document text
    • https://cdn.sqhk.co/nadevukoved/r0lgghj/zivotoguzuvonilaxukukufef.pdfIn PDF document text
    • https://cdn.sqhk.co/fizuborugas/jidjcig/34501417000.pdfIn PDF document text
    • http://dalnoboyi.xyz/sportpark_het_schootsveld_deventer_weather_reportc3dru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_092b767fbc0a4166a5b6ae29b664d080.pdf?index=trueIn PDF document text
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_681c0cd9a1a74ddf89aa70833918be3d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/welanisowari/why_was_allegiant_part_2_cancelled.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/united_states_visa_application_form_barbados.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c2bde55-e41c-4715-8171-4e5452328e2a/dino_hunter_deadly_shores_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/950c1bb2-3beb-4823-bfac-350660fa46ab/junawejuxafun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/268310f6-17e9-4d43-b29c-d53b60da37a4/free_printable_daily_weight_loss_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2787960a-42bc-4902-9241-e0189226885d/tajelaxetapow.pdfIn PDF document text
    • https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_988c4c95b69a4e69a7fbf6cfea82c11b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/89eb3aeb-fce2-4161-88a7-7fb61e5ca834/husqvarna_riding_mower_yth24v48_drive_belt_replacement.pdfIn PDF document text
    • https://4647adb0-9c01-46a1-aef1-4380d5873f13.filesusr.com/ugd/edb4a7_1793e08561154c788b85a569837f5139.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/zixiburotibimi.pdfIn PDF document text
    • https://e40da922-b0e4-44be-9878-2d4898ccab21.filesusr.com/ugd/3a38e0_e83cccd0b1fa46e8a8f3cd76fbf045b1.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_off0000f26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26F 5688 bytes
SHA-256: c8c795cfa9afdb9fef60731fe7f141bbca630f42d9810cd824ea9d9fc1370b0e
font_01_sfnt_off000105db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DB 11212 bytes
SHA-256: aadd18f2de6ddd257311fb6ecdeb99a0326d07c205b7eb7ab9e5b55cd493958c

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