Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f28800474427f63…

MALICIOUS

PDF

71.2 KB Created: 2021-02-18 20:44:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ba95f0107b4564a737d0eebd2ca5a2d0 SHA-1: f7f4f783a2c01fd84969cc7d7b30e93c0b6606f4 SHA-256: 0f28800474427f6398bc7253512ec17a71dedec0185122e06dca5049d17d422d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/wix?keyword=naming+functional+groups+worksheet+with+answers PDF link annotation
    • http://org-fruit.space/zepularizeba352ds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379222/normal_5ffb4c9a0a46e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420238/normal_5fdef297ae2f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496580/normal_5ff7ac4f59b87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479436/normal_600f3548886d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485809/normal_5ff09203ec29b.pdfIn PDF document text
    • http://sehq.xyz/book_report_ideasakmxd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_5fe8ab2e5b5c4.pdfIn PDF document text
    • http://gramnews.xyz/69389526680rbftg.pdfIn PDF document text
    • http://nanolenka.xyz/pixma_mp190_manual4m5jh.pdfIn PDF document text
    • http://feyakast.online/aha_2015_bls_provider_manualed2wp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480589/normal_601876e77c1a7.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/andhra_pradesh_government_schemes_listrjkc1.pdfIn PDF document text
    • http://edayafar.xyz/rakebisulisfwdyo.pdfIn PDF document text
    • http://alluniversity.fun/bohemian_rhapsody_piano_sheetvnvv2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371246/normal_600513dc7b090.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/sizadagazagaj/braven_brv-_1_speaker_manual.pdfIn PDF document text
    • http://mebexadesojixip.rf.gd/fortnite_challenges_cheat_sheet_week_10.pdfIn PDF document text
    • http://pidezesu.rf.gd/kha_file_khng_cho_copy.pdfIn PDF document text
    • http://zudozam.epizy.com/vezaromupukobugegaki.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/sasuzo.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/38685651845.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/71018952333.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/discuss_public_policy_making_process.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A1 5556 bytes
SHA-256: f7e10dfc37108b9f2b22e15a2ff8ad4cf56b9977cad9acf3737d6f9f6d2b67bc
font_01_sfnt_off0000eb7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7E 10636 bytes
SHA-256: 77e75d094e29af150dbebd89c4c0a1ba6e97d6aaad20cafebda027bab88893ad

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