Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc90748f1a11f668…

MALICIOUS

PDF

95.4 KB Created: 2020-12-02 00:20:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c2cab72491deed184f9b6d47ca143335 SHA-1: 1fca1e62492a3799115ca7e8c3a10f25cd2a7b7b SHA-256: bc90748f1a11f66859a2cc1116b049f4c9c63c64667dab334dea4544a401ec08
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ggtraff.ru/aws?utm_term=free+template+admin+dashboard In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lulodegoner.pdfIn PDF document text
    • https://pozosukezogi.weebly.com/uploads/1/3/4/3/134386022/xobameworum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_5f93e4ad8591b.pdfIn PDF document text
    • https://wowifowukanu.weebly.com/uploads/1/3/4/6/134634936/8399500.pdfIn PDF document text
    • https://saloramorolo.weebly.com/uploads/1/3/4/3/134307331/lanelawi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464302/normal_5fa42794833dc.pdfIn PDF document text
    • https://xirejefeju.weebly.com/uploads/1/3/4/7/134723985/xawenopi-jijulenitaz-badobavix-pujesekon.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://static1.squarespace.com/static/5fc0b629affbf90a66e985ea/t/5fc16dc84e98326c0246173d/1606512075449/wife_of_bath_study_guide_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe33306d-40da-4d81-a7ec-f95cc3854ec9/maji_de_watashi_ni_koishinasai_download_vn.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe15254e98326c02d8007d/1606292773824/blueprint_for_armageddon_5.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e8cb2bbd74065813b48b/t/5fc3d7c2145a8629dc264116/1606670276061/murray_lawnmower_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf0272edfcd2bda90559b/1606217769134/nefupebewopunokusumi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57cef12facd59cecc0b9a/t/5fc6844b64571256541e24fc/1606845523673/4_pics_1_word_answers_5_letters_answer.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F12 5080 bytes
SHA-256: 1a4b9f87271654450a1aec8968c055dfefe21c9754695f070305981b3c541b99
font_01_sfnt_off0001400f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1400F 10092 bytes
SHA-256: f520227d954c5b7f66e7e0f5dc4ce4c4390605d4995ae6bc9c036d0d2bc1d0be
font_02_sfnt_off00016278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16278 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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