Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29df6a1a53f40f5…

MALICIOUS

PDF

86.2 KB Created: 2021-03-19 12:07:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a7f48a4ee1fae69de9b35476d11b6fa5 SHA-1: 10aea1cbc37f80a84929b4b25818ba5b4ecdcf54 SHA-256: d29df6a1a53f40f576cdf2e6b73ad45032a3202c0586642ac321d4d3754bbdc2
136 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 ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://zajinet.ru/wix?keyword=quadratic+formula+word+problems+answer+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393790/normal_5fe4230e792cc.pdfIn PDF document text
    • https://doxizuzipoleri.weebly.com/uploads/1/3/5/3/135323895/zaxofumilafo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460706/normal_5fcacfaf2e20f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5fdbe3efe0721.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459328/normal_600fd7f042186.pdfIn PDF document text
    • https://pibusabet.weebly.com/uploads/1/3/4/6/134695111/6964822.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450350/normal_5fef15db85fb8.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/nikon_coolscan_v_ed_driver_for_macfc0tp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421768/normal_6037242414923.pdfIn PDF document text
    • http://antonioit.space/xalinadulatejudivavexubnng9.pdfIn PDF document text
    • https://lenumerizak.weebly.com/uploads/1/3/5/9/135962539/9d38492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389830/normal_603b53aa6ce8d.pdfIn PDF document text
    • https://kevafesituwa.weebly.com/uploads/1/3/4/0/134040773/butigave.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/ijnu2je/beast_bendy_coloring_pictures.pdfIn PDF document text
    • https://numesenara.weebly.com/uploads/1/3/1/0/131069843/5083512.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379856/normal_5fe15e79e58fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453719/normal_600a5caacb293.pdfIn PDF document text
    • https://cdn.sqhk.co/rowavarop/iagg4ii/39728834517.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/hd9vTPB/9836282433.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/litunux/99353566446.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/7896338083.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE4 5760 bytes
SHA-256: 6381c2ec6d3079074905c47f8ebfa5b3be52da9e7c13ad6873ad8f23c3bd2b7a
font_01_sfnt_off00010f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F80 11020 bytes
SHA-256: aa1b082ceda01655532fe20ce01de1e09a0a0d153b2f24057b07f89ee33f4ca0
font_02_sfnt_off0001353a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1353A 16260 bytes
SHA-256: 767aa7005c6a9dba3c064165dd206dc2a05c1f4a5f494ad110eb6fca4225005c

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