Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a7c4d6449d8167…

MALICIOUS

PDF

86.7 KB Created: 2021-04-04 02:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a4195c19157f122d9e41c0cc54ac302 SHA-1: b84854359fe705d1493860e07984117f3fbb8d76 SHA-256: 65a7c4d6449d816722ab99bee0116702d4df940056b664706ad46c15868f1ee1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The presence of a URL related to 'pop up laundry hamper home depot' suggests a lure to disguise malicious intent. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://resalured.ru/wix?keyword=pop+up+laundry+hamper+home+depot PDF link annotation
    • https://woxisuxifajise.weebly.com/uploads/1/3/5/4/135400236/sakotovazu.pdfIn PDF document text
    • https://jusodizepo.weebly.com/uploads/1/3/1/0/131070216/995d3706d4ad.pdfIn PDF document text
    • https://wezedamuj.weebly.com/uploads/1/3/4/4/134480618/3559da0c3d62.pdfIn PDF document text
    • https://nabesoke.weebly.com/uploads/1/3/4/0/134042749/7b5624100a.pdfIn PDF document text
    • http://jojonavakuxuf.iblogger.org/zomilebedexuzaditiwew.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/4c350ad2-1314-488f-8380-73708b59605d/how_to_write_a_play_script_for_grade_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2e99083-b882-4542-8bc3-fe9d68e7f7ac/old_snapper_riding_mower_model_numbers.pdfIn PDF document text
    • https://8650d040-a33d-467d-a608-6706f181f11b.filesusr.com/ugd/61b8bf_95060c85b06d44e68e305d862c2cb226.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f13bcb7-d97f-403e-be3f-2e20bfe2cb22/romeo_julieta_short_churchill_review.pdfIn PDF document text
    • http://pubitawiwinas.rf.gd/tuwabijopex.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/segment_routing_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/39754160655.pdfIn PDF document text
    • https://d497f082-4895-42de-a72c-038d9367c8a3.filesusr.com/ugd/8e727b_936aa8c735a74bf1ac48764e0102bf8c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e664fdf3-11a9-42f3-b542-11d94a21528a/kisalotanajudipime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d8c99f9-804f-450a-a589-4757f0f8b5a8/4776371922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e9835e5-da8c-42a0-be17-7bc1121ed58d/cooking_merit_badge_book_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/technical_writing_training_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4877c72a-b1c0-4d7e-a954-9465445afb2c/zatazojabitinikelamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be19fd88-af2c-4d8e-bcfc-68df6de8f225/32442881139.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9d00ddc-7496-48fc-8f05-3e97e1f5b443/gekisamotikuxidomibi.pdfIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_1d40b63015a246bbad05d3f3d3c951ff.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd5b7297-4ac6-4fd5-9c69-07911bf919fe/89235644858.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_off00011438.bin
d36b77200805760b88101f0635525f97b4406ea9456aa67665fcc94b1d6518a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11438 5124 bytes
font_01_sfnt_off00012581.bin
34fed531e095f1b7e326b8912c5e03b09c7fbd1b1c15b323781976637578c7c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12581 11300 bytes

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