Malicious PDF — malware analysis report

Static analysis result for SHA-256 2395754443eb4003…

MALICIOUS

PDF

62.7 KB Created: 2021-02-11 16:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c58f27edf853f7bfc8c2ac838d5188a1 SHA-1: 132c99c9e8c2b85e91861dbf5694b68a3bc83e94 SHA-256: 2395754443eb4003dee1460b0048c54697d52d1d1c39a41ee613977a2dcb13c2
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, many pointing to PDF files, suggesting a link farm or redirection mechanism. The primary URL, https://jottigo.ru/wix?keyword=introduction+to+management+science+12th+edition+solution+manual, is likely used to lure victims under the guise of providing a solution manual, potentially leading to phishing or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://jottigo.ru/wix?keyword=introduction+to+management+science+12th+edition+solution+manual PDF link annotation
    • https://kefepifumadig.weebly.com/uploads/1/3/1/3/131383651/97af7bfa3c4.pdfIn PDF document text
    • https://sejexogubason.weebly.com/uploads/1/3/1/0/131070030/db33adeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365662/normal_5fcf290ddc9aa.pdfIn PDF document text
    • https://dizodedijep.weebly.com/uploads/1/3/5/3/135391654/5835b800b62a.pdfIn PDF document text
    • https://tizemafuniture.weebly.com/uploads/1/3/4/6/134636649/5abeb6.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/hgk7Y7c/89302404063.pdfIn PDF document text
    • https://cdn.sqhk.co/poladejug/dqkRgeQ/transmission_fluid_change_coupon_valvoline.pdfIn PDF document text
    • https://nokabukewodujam.weebly.com/uploads/1/3/0/9/130969525/b99c1b61726f7.pdfIn PDF document text
    • https://tizemafuniture.weebly.com/uploads/1/3/4/6/134636649/0a941.pdfIn PDF document text
    • https://kekufekogaj.weebly.com/uploads/1/3/4/7/134768560/5107946.pdfIn PDF document text
    • https://niritopep.weebly.com/uploads/1/3/4/6/134634222/gimevob-mirobom-dofobaku.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/mozirolinitaje/47573049730.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/apollo_justice_case_4_trial_former.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/zaroranajerexag.pdfIn PDF document text
    • http://ganesuk.epizy.com/72161191775.pdfIn PDF document text
    • http://zebofazedixa.rf.gd/kennington_oval_london_weather_report_tomorrow.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/carmelite_breviary.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/tobalotizukiroma.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_off0000b835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB835 5472 bytes
SHA-256: ef472e86883a28cb27db9783c84d89531bf16278ee13cc3186707bbd45a28f17
font_01_sfnt_off0000caa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA3 10148 bytes
SHA-256: 1f184075aca941fc1920f641fc691dcdad24b78a215b9289006381051eb1b16e

Open this report in the interactive analyzer, or submit your own file for analysis.