Malicious PDF — malware analysis report

Static analysis result for SHA-256 988bd7f602fed026…

MALICIOUS

PDF

958.6 KB Created: 2021-05-31 06:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 69f3b776170e27f379f52ad70634630a SHA-1: 5a130702530e57456a4ac52f1a992ec63c2ca5de SHA-256: 988bd7f602fed02696e242ceb3fd348b28c4a252e4884015f8e2ca08100b3b1f
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV with a signature indicating it is a PDF phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of the URL and the ClamAV detection strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1422

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://xezojetit.ru/123?utm_term=chakravyuha+songs++old PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415518/normal_6049f8b11b5d1.pdfIn PDF document text
    • https://devigafaviv.weebly.com/uploads/1/3/4/6/134698058/vifagowifotewu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417526/normal_60699182c7e8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456143/normal_5feb0257eb456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421770/normal_6067d335f1cae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_60669a82e8394.pdfIn PDF document text
    • https://velawavasikene.weebly.com/uploads/1/3/5/4/135400921/8682385.pdfIn PDF document text
    • https://ganuzuvotaju.weebly.com/uploads/1/3/5/3/135304652/zanususudi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369643/normal_5fffd9d4941aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484812/normal_6064b070721f3.pdfIn PDF document text
    • https://lexeparuma.weebly.com/uploads/1/3/1/3/131380616/361291478.pdfIn PDF document text
    • https://datezovog.weebly.com/uploads/1/3/0/7/130776229/fifujatunitebu_bemujuwezerad_nejakorewetum_bigejemox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404976/normal_60062af7ddae1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387566/normal_6004df47bfa6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366959/normal_5ff89de02bf07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487927/normal_5ff2afa3c9c21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405654/normal_6063f8c60cc02.pdfIn PDF document text
    • https://zapunetiregete.weebly.com/uploads/1/3/5/9/135956705/xovoguzov_zosewoxofe_posujexatadoz.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://uploads.strikinglycdn.com/files/dfd9e185-fd5f-4227-8e54-eae6e6013387/18556918908.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94d34aae-a46e-4b13-8bec-890bd7911748/hp_p1606dn_chromebook.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000ea1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1DD 4972 bytes
SHA-256: f2c9cbae39c995165ecd6e4984c489eacc07b2f35a9426c00564ab19aad930a1
font_01_sfnt_off000eb2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2C4 10848 bytes
SHA-256: 3dd9b3c434ba77f59a4619c456a8916e92ac80c29d9b59be194cde4c5fa7b64f
font_02_sfnt_off000ed7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7A7 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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