Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dac48928a90447a…

MALICIOUS

PDF

82.6 KB Created: 2021-01-23 04:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c3c3b87218ad8d72bef7b240f82af93b SHA-1: 98602c13a8ba9ad60c367e6d233edbba5865f9c4 SHA-256: 0dac48928a90447a3fe6dbe68b9ec21b25c9dc5bc29beada1e28a5a9d296dcce
126 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 a large number of external links characteristic of an SEO link farm. 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
  • 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://trafftec.ru/aws?utm_term=android+car+bmw+e90 PDF link annotation
    • http://gugatem.22web.org/j2_google_bypass_apk.pdfIn PDF document text
    • https://site-1168247.mozfiles.com/files/1168247/43194102177.pdfIn PDF document text
    • https://site-1256529.mozfiles.com/files/1256529/39520595567.pdfIn PDF document text
    • https://site-1195811.mozfiles.com/files/1195811/kixafiwu.pdfIn PDF document text
    • http://jaxebememapi.iblogger.org/1633156343.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373243/normal_6006afbfc7178.pdfIn PDF document text
    • https://site-1173990.mozfiles.com/files/1173990/lozupud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_5fd2e9d8ccb34.pdfIn PDF document text
    • http://mekozeka.66ghz.com/sititevibovinude.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zezazemana.epizy.com/nfl_fantasy_football_draft_guide.pdfIn PDF document text
    • http://kanusilos.epizy.com/appraisal_sample.pdfIn PDF document text
    • http://wufutogaj.epizy.com/wasteland_2_starting_guide.pdfIn PDF document text
    • http://mezexefobotero.epizy.com/burglar_bill.pdfIn PDF document text
    • http://rotitow.rf.gd/microwave_transistor_amplifier_analysis_and_design.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/tofebawebesaruxu.pdfIn PDF document text
    • http://pugunexipidil.rf.gd/chegg_flashcards_apk.pdfIn PDF document text
    • http://wijobofeforot.epizy.com/google_sheet_l_g.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BF 5104 bytes
SHA-256: 0994a3a0544bb90706eafff00403dfce759acbeb80701e4f67bf6a08c64749b3
font_01_sfnt_off0000faea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEA 6068 bytes
SHA-256: d8e4b7f44dfb66ea49c7f1cefd345a391fade3fb548cc17de4cdbf151663dabd
font_02_sfnt_off00010a9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9B 10856 bytes
SHA-256: b52265d61b030fce499e1377b6ce28b91537a4bbd6653a93e99a422fb6d7e85b
font_03_sfnt_off00012f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F05 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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