Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f75c4c49dbc25aa…

MALICIOUS

PDF

81.3 KB Created: 2021-03-10 08:17:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: a2d2d131708c278b86032f17cec51b18 SHA-1: 2f36df8e8a7ef449a89334fd63654eb9d77d2022 SHA-256: 1f75c4c49dbc25aab42a5646349e9ecdf4397882808f4c8af43d753f7c5f5b65
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, contains keywords related to a product, suggesting a lure for a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/aws?utm_term=miller+bobcat+225g+plus+welder+generator PDF link annotation
    • http://nuloriwilorij.scienceontheweb.net/tarudutu.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/iedjiVp/now_there_you_go_again_song.pdfIn PDF document text
    • http://popisazono.getenjoyment.net/gafisevamoxurubazowagizo.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/jgmiege/jukanosidazexozerivoranu.pdfIn PDF document text
    • http://lagulesuko.medianewsonline.com/xubezozifinera.pdfIn PDF document text
    • https://cdn.sqhk.co/jogujufuza/7ijgjWK/tosoxajolat.pdfIn PDF document text
    • https://cdn.sqhk.co/jetekujob/jOjduur/accelerator_plus_crackeado.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wuxupewu/vobekajomob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09220caa-9e90-476e-ad56-3eae01ca0013/lobuzebuli.pdfIn PDF document text
    • https://af0fe010-594a-4ec7-a26b-e2d78e33490d.filesusr.com/ugd/7d2910_92a51acec3f142ebb64007882bf08a9c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/91678304772.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/how_to_google_search_only.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07402e11-b097-4284-abdd-30842abbe6e1/39102510744.pdfIn PDF document text
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_e3c8579f77d94f058c5269a1431e5443.pdf?index=trueIn PDF document text
    • http://magegefopo.atwebpages.com/what_does_gram_positive_cocci_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cc212ff-2b53-438a-8bc8-049a802079ed/vans_old_skool_high_top_platform.pdfIn PDF document text
    • https://6346cca1-8be9-442e-91e0-e35201572fa6.filesusr.com/ugd/a8c077_317ad5174172462cb5262b2822b78270.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ac06df1-b201-4729-878c-79aea517d5f3/are_old_swatch_watches_worth_anything.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/28825207101.pdfIn PDF document text
    • https://a21f0d7d-5fe0-4a99-a381-3b18266e0880.filesusr.com/ugd/6c313a_7291162e7b9f4b7c94d72ab29aecf662.pdf?index=trueIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_fb2dc1b4624346abbb4f42f9db65d2f3.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9E 5616 bytes
SHA-256: 26693f2bb0e052c3c5452ce2a07a67f205f1cdbf18ee09f77ce073ee058752c4
font_01_sfnt_off000102cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CD 11564 bytes
SHA-256: 033c8af452597b5815314580aa83c856745be78be732bb4fdc8990f4f44a235a
font_02_sfnt_off000129e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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