Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b1256b3e62d475…

MALICIOUS

PDF

76.2 KB Created: 2021-03-20 12:39:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 237f95a5f42cb3f82e5e281bb2ed5373 SHA-1: d482e92c90ae997ee5cf865066c0355388e39104 SHA-256: e8b1256b3e62d475d96f518220792fcd82ee1cfb1568fc87c43260940e6b6648
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://soxebez.ru/wix?keyword=deer+hunter+2016+mod+apk PDF link annotation
    • http://espaceclient-cmb.com/fazeledopuwudewlsl5.pdfIn PDF document text
    • http://leafester.online/pimuxexipekepuhgovk.pdfIn PDF document text
    • https://cdn.sqhk.co/wudawagirus/Rjbhjhg/nosujugotebuwafol.pdfIn PDF document text
    • http://islta.fun/vedawajemarhdvhf.pdfIn PDF document text
    • http://train-home.ru/morajuirgrz.pdfIn PDF document text
    • http://tramlaweq.online/f0_error_code_trane_mini_splity5lj1.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/hjjahhk/569349614.pdfIn PDF document text
    • http://1gusevshop.space/1976465063777we6.pdfIn PDF document text
    • http://all-casino.xyz/airbus_a330_seat_guide7fwoh.pdfIn PDF document text
    • https://cdn.sqhk.co/mugukawi/jatidQq/american_history_quizzes_for_high_school.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/channel_7_news_belize_weather_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27446321-5661-40c8-b114-7d68b12d04d1/fejenoronuzemeso.pdfIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_82abfab8f4e24b38915605810c921815.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f0b5df8-c0ff-4ad2-8754-b83d53782cc6/last_date_for_cfa_level_1_registration_dec_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/bosch_300_series_shem63w55n_dishwasher_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/puxesisivudetu.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/appcenter_android_symbols.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e720bc04-fee4-4352-b3d5-22b3abaa3118/wirixetesurifokuj.pdfIn PDF document text
    • https://8be317c1-93d6-4444-9a1c-030c84ae583f.filesusr.com/ugd/709942_4c57c7155a954434af2e8dd8b121ef74.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2281c2b4-1318-4eab-a478-14604d92e7e3/american_red_cross_blood_drive_coordinator_login.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/levuwopukukozamipesejizu.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_off0000eb0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0E 5532 bytes
SHA-256: d171d7a82fe2e9ff75de2a95f5d2013d206849d20b59f6dc1659a403378a76c9
font_01_sfnt_off0000fdb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB5 10860 bytes
SHA-256: 3bc84f2781b5a5828bb2232f44897969350bf886e4ee29e3ffaf9ab299e794f9

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