Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3569550a08671de…

MALICIOUS

PDF

59.3 KB Created: 2020-12-17 21:49:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b6d0541c6ad341078faa5786701d83af SHA-1: d84d48ede7cd87e725805177acfe3627afb3729b SHA-256: a3569550a08671de5553586229774f31b854783c77152413cc621456f08b8116
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document was flagged by multiple critical heuristics as a malicious redirector and link farm. It contains numerous embedded URLs, many pointing to disposable hosting and redirector services, indicating an intent to lure users to potentially malicious destinations. ClamAV also detected it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://gettraff.ru/123?utm_term=by+the+water+of+babylon+answers In PDF document text
    • https://sizamuvexiluti.weebly.com/uploads/1/3/4/6/134644091/5ee4642.pdfIn PDF document text
    • https://bososafevibusup.weebly.com/uploads/1/3/4/0/134041518/rulixekax.pdfIn PDF document text
    • https://bejulukif.weebly.com/uploads/1/3/4/7/134746679/xidev.pdfIn PDF document text
    • https://betimamiru.weebly.com/uploads/1/3/4/8/134898968/wodukopukepagatefim.pdfIn PDF document text
    • https://vugesajovor.weebly.com/uploads/1/3/4/2/134265649/ba9ac2614.pdfIn PDF document text
    • https://debaduvevuw.weebly.com/uploads/1/3/4/3/134383420/narameb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4261f9d-8eb3-4fd7-829e-92684e6d1087/bekafesifogukagola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ae44c3c-3609-4953-8bd6-a125fae603b1/3915790025.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e8305687f52b6b812c21/t/5fc227122dd96f5918375dd3/1606559507173/radejukusamikiniju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/215e75f5-504c-4248-be7a-81dc404c125b/pekete.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5dced0b6b03258f575f14/t/5fd6969a5b1f6f7539df828e/1607898778733/ancient_egypt_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef4be5e3-8068-48dd-8fb6-3ebd4dab6c29/21988760487.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2fc780b6b03258f43150d/t/5fc969e8ed280e32aa82d184/1607035369465/kazaja.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59ab6084698658e7e4eec/t/5fd231dc8185f4776a1875fa/1607610844732/insert_square_symbol_in_word_2010.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000adec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADEC 5236 bytes
SHA-256: d47b6357783988a5a971fab4d811888a5eb35cd0e28cf0bce05d92e873f06e85
font_01_sfnt_off0000bfd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFD2 9552 bytes
SHA-256: 0a59d03a3f352f8f087b97306452096744a70946b0c1f868cc1a3be92cca1889

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