Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c87fea1e1a80b0b…

MALICIOUS

PDF

80.1 KB Created: 2021-04-09 06:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 617b41542bc7cb4992c13f65fee1a541 SHA-1: 47d407a8b69fd6177befca476117247761aa5331 SHA-256: 7c87fea1e1a80b0bae0ff684b6d4946f4b43ddfba8df02f5d7d3c150db155195
214 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to known malicious redirectors or link farms designed to distribute malware or facilitate phishing. The heuristic firings indicate the presence of malicious redirector links and a link farm, suggesting the document's primary purpose is to drive traffic to potentially harmful sites. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=second+hand+john+deere+tractor+parts+australia In PDF document text
    • https://jifemeput.weebly.com/uploads/1/3/4/3/134398411/441230.pdfIn PDF document text
    • http://qlemelest.online/82579178209x5m1u.pdfIn PDF document text
    • http://gufutaca6.xyz/kuhn_rikon_duromatic_inox_pressure_cooker_manualxsw1j.pdfIn PDF document text
    • http://3bki.ru/motorola_modem_sbg6580_firmware_updateky665.pdfIn PDF document text
    • https://wivusogonelom.weebly.com/uploads/1/3/5/3/135310870/9086410.pdfIn PDF document text
    • http://gufurebu.medianewsonline.com/maulana_ashraf_ali_thanvi_urdu_books.pdfIn PDF document text
    • http://xuxikurov.mygamesonline.org/arthritis_back_exercises.pdfIn PDF document text
    • http://shopeuro.pro/7308393237252u0g.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/49752750100.pdfIn PDF document text
    • https://bemebedutor.weebly.com/uploads/1/3/4/6/134624352/7bf29a166.pdfIn PDF document text
    • https://dobivevoxopu.weebly.com/uploads/1/3/1/4/131453544/aacb2.pdfIn PDF document text
    • https://pexasojurez.weebly.com/uploads/1/3/1/3/131381046/bupuniwu_walugowuke.pdfIn PDF document text
    • https://jinafoxibufesow.weebly.com/uploads/1/3/5/2/135293268/c9f171fa848c99.pdfIn PDF document text
    • https://fagedudadisex.weebly.com/uploads/1/3/0/8/130874641/gezifumemojafexepif.pdfIn PDF document text
    • https://tosulabemolajeg.weebly.com/uploads/1/3/1/8/131871730/3fd8105af78.pdfIn PDF document text
    • https://vorajazelilax.weebly.com/uploads/1/3/1/4/131407498/9317742.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://s3.amazonaws.com/jevopemosod/zikigak.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/fanewugovexesazev.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/20876009369.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/82178240714.pdfIn PDF document text
    • http://nupuzawov.onlinewebshop.net/christian_apologetics.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_off0000ed2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2E 5224 bytes
SHA-256: cb33b054479f36d99a06d5813717e6c31f90951750114dabcb0cca4f0d562955
font_01_sfnt_off0000fed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED4 11172 bytes
SHA-256: 6c17b97f87d4372f6e638cb1267b1aa6f97e8b0846a2be894feaba23cab8baad
font_02_sfnt_off000124e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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