Malicious PDF — malware analysis report

Static analysis result for SHA-256 e05f08615d91ff49…

MALICIOUS

PDF

60.8 KB Created: 2020-10-28 13:01:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ea82920215cf94d6b963dcaeefb4d2d0 SHA-1: 6dd495f21248bb9a306218b44b3805560a1a95bb SHA-256: e05f08615d91ff497d3be6fc84b63bd526ee170d9a389bbb71ddadf4878982e8
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document about 'object oriented design uml'. The ML classifier strongly indicated maliciousness, and the PDF was found to link to known malicious infrastructure. The embedded URL, 'https://ttraff.cc/123?keyword=object+oriented+design+uml+pdf', is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.cc/123?keyword=object+oriented+design+uml+pdf In PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/gamiwaparilej_xujakapikuva.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/sabikosinogu.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/bozalelil_fateluzog.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/tawutojesus.pdfIn PDF document text
    • https://puliwavigajog.weebly.com/uploads/1/3/4/4/134469254/7793023.pdfIn PDF document text
    • https://gozarijaleb.weebly.com/uploads/1/3/4/3/134337750/2059180.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/0ee8332c5.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/d1ee3c84.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://uploads.strikinglycdn.com/files/56d2ae03-876d-492e-9065-f29837f304e1/wellens_syndrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4272/4762/files/81816515496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ffb6fd7-3aa4-404c-9950-de9ff88d0d76/66705971311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0344/3862/files/diono_radian_rxt_manual_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8430/9166/files/lagijizatobirexol.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/97180821419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9365/4202/files/champion_generator_2000_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/638238e6-f3d8-49c6-ab14-b487e71e5074/bajexivibizajiwenir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f44ca2dc-e0ad-4abc-be10-dedd44892f63/806965317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8368/8864/files/is_chaos_flame_considered_dark_souls_2.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_off00009d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D4C 5392 bytes
SHA-256: 6fbf06299128f718dade0cc479872ae38b6e637c3355f87277037bdb7086f9b4
font_01_sfnt_off0000af87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF87 11744 bytes
SHA-256: ff3ac97627298de81fcae23609808ffcfa7fbebc91a6db842f1cd4ad67be5666
font_02_sfnt_off0000d76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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