Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ccc06fc78700e7e…

MALICIOUS

PDF

81.4 KB Created: 2021-03-08 11:45:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 41d547005a0eb1e888018c104f6565c1 SHA-1: ac5846890f2a8be4ca117beec2aec6e147c80c60 SHA-256: 8ccc06fc78700e7eef7522cbb43c4b4bdd9a9ca05c99d8c79f7abe646d7944a4
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content, such as the 'android 6.0 apk download' URL. The document's structure and numerous external links point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://resalured.ru/wix?keyword=android+6.0+apk+download PDF link annotation
    • https://cdn.sqhk.co/wejafivelij/dPicFOl/folajerogufulivaras.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/MhagdUO/snappy_gifts_list.pdfIn PDF document text
    • https://lufuneliza.weebly.com/uploads/1/3/2/6/132682735/vubokomo_fixetak_xefodezafoke_tuzuku.pdfIn PDF document text
    • http://shoop-fg.ru/street_kings_drag_racing_mod_apkzn5hq.pdfIn PDF document text
    • https://daxulidotuviwo.weebly.com/uploads/1/3/4/5/134597057/7781776.pdfIn PDF document text
    • http://tiktokfrance.fun/felexakawojkkaw.pdfIn PDF document text
    • https://rozutawupev.weebly.com/uploads/1/3/2/6/132695629/bifuxavewolugag.pdfIn PDF document text
    • https://buwenesuxunuga.weebly.com/uploads/1/3/4/8/134883777/kelapaxonu-jovamidinefo-motap.pdfIn PDF document text
    • https://wabomojufodeze.weebly.com/uploads/1/3/3/9/133999178/mezel.pdfIn PDF document text
    • http://servisvds.ru/doki_doki_exit_musicce2cd.pdfIn PDF document text
    • https://savaxibinis.weebly.com/uploads/1/3/3/9/133997587/9427686.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/ghc6jiQ/mighty_final_fight_android_download.pdfIn PDF document text
    • https://rebavunegiluzu.weebly.com/uploads/1/3/4/4/134497465/1331798.pdfIn PDF document text
    • https://sozawozoxo.weebly.com/uploads/1/3/4/5/134509422/kotuxigonaveto-fazinetaj-ximufiloji-togef.pdfIn PDF document text
    • https://cdn.sqhk.co/zanudiwageg/qigicid/38244732243.pdfIn PDF document text
    • http://seamanygau.best/android_9_pie_gesturesbntuh.pdfIn PDF document text
    • https://ruzoriro.weebly.com/uploads/1/3/5/9/135975417/633d4d150d.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/samsung_syncmaster_sa10_price.pdfIn PDF document text
    • http://erkutungotu.com/99762358847zzynj.pdfIn PDF document text
    • http://jatamonip.iblogger.org/model_cerere_demisie_fara_preaviz.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
    • http://fiforeru.atwebpages.com/what_is_java_ee_8.pdfIn PDF document text
    • http://puzuritutu.rf.gd/describing_trends_vocabulary.pdfIn PDF document text
    • http://buwozefavimim.epizy.com/armored_core_project_phantasma_iso.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_off0000f652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF652 4840 bytes
SHA-256: 4e2afbd10b9c7a3b1803cba2bc90716bc57d59c9891a4b9307edb27f39f628e0
font_01_sfnt_off000106cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CC 10296 bytes
SHA-256: 62c6ae22d253561a141d68fd605db2dd608f2dcd600c1366670046a3349b4ddc
font_02_sfnt_off000129f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3