Malicious PDF — malware analysis report

Static analysis result for SHA-256 16014561e9819bf5…

MALICIOUS

PDF

76.6 KB Created: 2021-06-15 11:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 46d229a0f38d6bce2832bfb3a986bca8 SHA-1: 3f039d453fc3da5830b473379229586f6a59c222 SHA-256: 16014561e9819bf592643ee1e6d356dc775210a966c2076fef2069935c47eb08
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, and one primary URL suggesting a lure for a game mod. The document body is heavily obfuscated, but the presence of numerous links indicates an attempt to redirect users to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • 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://philabc.ru/pbw?utm_term=blossom+blast+saga+mod+apk+unlimited+gold PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4393363/normal_60b66ca4765c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458122/normal_5fe0c7c1864cb.pdfIn PDF document text
    • https://muwalarole.weebly.com/uploads/1/3/5/9/135959937/detijikovaxobinow.pdfIn PDF document text
    • https://tisudarolajese.weebly.com/uploads/1/3/0/8/130813738/b04892f3d07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448343/normal_6029e1981a74a.pdfIn PDF document text
    • https://xalanuxezofoki.weebly.com/uploads/1/3/4/3/134309931/1109247.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/16ecadd5-31a0-43e7-b954-15d3ab445edd/gudotuwageniguw.pdfIn PDF document text
    • http://lifabukis.pbworks.com/f/nejasojesozadaxopukore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fef3be7-86f1-4d27-bd27-416ce8604412/folagevijuwajelajok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cac39ff-095f-46e4-bfcf-eec34625fe32/66440111921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18cf9b39-169c-4184-aa25-3200f024c441/labetilasoje.pdfIn PDF document text
    • http://xulajirose.pbworks.com/f/80808779197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10bc9198-a0a9-43e4-8662-5425cba32256/boeing_737_max_8_fcom.pdfIn PDF document text
    • http://vazesuna.pbworks.com/w/file/fetch/144617061/28035835141.pdfIn PDF document text
    • http://wudiwiligis.pbworks.com/f/how_do_you_manually_reset_a_furnace.pdfIn PDF document text
    • http://biwonuv.pbworks.com/w/file/fetch/144467889/call_recording_recovery_pro_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/141c57ee-b462-4815-9f09-495af351bc64/soul_by_soul_walter_johnson_audiobook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a629fda-934f-436d-a0a3-814a1e6dd751/4_pics_1_word_level_2162.pdfIn PDF document text
    • http://gebetedoke.pbworks.com/f/android_billing_library_github.pdfIn PDF document text
    • http://jubujefaj.pbworks.com/w/file/fetch/145087758/buximigijoxuxigirevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6281c109-19af-4769-ae44-0b4d90f4deb7/how_to_clean_your_teeth_with_a_waterpik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2742dde3-c624-493b-abcb-6075ca43c4ca/47347980259.pdfIn PDF document text
    • http://wimarolos.pbworks.com/f/82170145015.pdfIn PDF document text
    • http://negipidini.pbworks.com/w/file/fetch/144553293/early_termination_of_lease_agreement_example.pdfIn PDF document text
    • http://sejawes.pbworks.com/w/file/fetch/144715458/how_to_use_brinkmann_smoke_n_grill_electric.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_off0000ecd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD2 5436 bytes
SHA-256: 1ccffaeb866581786b1e16d335eeff5f52e35b5ed364d2158a20776103ebb36d
font_01_sfnt_off0000ff3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3A 10912 bytes
SHA-256: 8fb181f470cdb7657d488a59e90865f74a7e4200a1bb56aa521ce312fb0f8bd2

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