Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c245cf65897978…

MALICIOUS

PDF

77.6 KB Created: 2021-06-09 15:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 58d928ea84b1490102a250fad94f2648 SHA-1: 2cd612f1ca8f1dfea6d18008f8316eee21ec62ca SHA-256: 80c245cf658979782dac344e56e43bf9d247f1158c846b155a546a1234e393b0
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a 'jurassic park full movie free download mp4' lure in one of the URLs indicates a common phishing tactic. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the phishing and potential malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://ketchas.ru/pbw?utm_term=jurassic+park+full+movie+free+download+mp4 PDF link annotation
    • https://tedofejufada.weebly.com/uploads/1/3/0/7/130775935/4406132.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/a5412f140bf.pdfIn PDF document text
    • https://kinamolifurepe.weebly.com/uploads/1/3/2/7/132710726/rirexu_botetirabir.pdfIn PDF document text
    • https://pikuteki.weebly.com/uploads/1/3/4/4/134459105/889477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393489/normal_600be17cd8af0.pdfIn PDF document text
    • https://majuzifulanapu.weebly.com/uploads/1/3/4/8/134887757/sajufa_lunewomakogasom.pdfIn PDF document text
    • https://zusadubojurumez.weebly.com/uploads/1/3/4/7/134703186/5103f.pdfIn PDF document text
    • https://sedapelagug.weebly.com/uploads/1/3/4/1/134109100/kiliwox-mazela-penakorabu-godoburinax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493541/normal_5fcbbb8b289ef.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4386092/normal_60b1b2e497020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426267/normal_5fce18daccf5e.pdfIn PDF document text
    • https://kidogotetivi.weebly.com/uploads/1/3/4/3/134375399/wileda-sutab.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/e0c2a28f-aaef-4100-97a3-5d3e6f0601bf/gofejodipuxidoviw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/718ccf87-40d2-411e-bba4-35fad053f6ee/44381499787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a071f929-72bc-4e4f-b8b9-886a7ec59801/miluvukonep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5512cadd-c303-4d10-a25c-2f5a740bde3a/how_can_i_learn_to_code_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72e96686-d6ec-4abc-a4fb-543c3dd3e38f/ninorinodevuwumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78a930f7-ccda-43f2-b8f1-dad1465fc826/lemidabemujafubuzivupape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8e8f2c1-6ee3-4307-a6ec-c21879b31cd3/how_much_is_a_ford_explorer_2002_worth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d42db19-1d2a-44b0-bef4-da07ac482c58/house_rental_agreement_format.docx.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_off0000e347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE347 5396 bytes
SHA-256: 759f111861d4d1b6275ffff58a566601deeae23f9a4e365efe4d1f319336307a
font_01_sfnt_off0000f5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A0 10956 bytes
SHA-256: 2116d371051e19b58e4e559d714421c880b46806ac32cc7eb36cc2b5b547b4d1
font_02_sfnt_off00011aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AEB 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f