Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7665d084dbebee8…

MALICIOUS

PDF

55.2 KB Created: 2020-10-26 05:22:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: b083e1c187a4c66cd87dac577a3f7323 SHA-1: 5f1b1a06035837e731e4c323529da392e3acb4ed SHA-256: b7665d084dbebee81f5b7a520672e754845238a0b100e1cc8b2cf467b26a7058
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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.me/123?keyword=genie+garage+door+opener+manual+release In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f8752d346156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408587/normal_5f9617307d4fa.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/3868b021d7a585d.pdfIn PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/lenurexanugelex.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/waxagitor_morasugifujawi_lujinepowop_guguwegifedurol.pdfIn PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/3271081.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/sevanubiverapekaxeto.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/numegubowalonan/logical_song_sax_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/books_on_love_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/periodic_table_o_level.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/fundamentals_of_accounting_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/24208967714.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/naming_aromatic_compounds_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4494/1223/files/wamuwebamogozevebep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2622/6075/files/boganagefit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7952/3240/files/divisibility_rule_of_1-100_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13843ba1-ba5c-45c7-ac80-99eefc7e3fb3/66916980432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc054ca4-6da7-46e9-9a3d-a4d537dd50ce/muwawodesozufal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47c70b19-6362-41a5-8205-3cc9280e09cb/puerto_rico_travel_guide_2019.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000824f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824F 5312 bytes
SHA-256: d85fe378c277b6bbe87e5a816406230865052ad45abbe6b70894e73bbdd9dfbc
font_01_sfnt_off0000944b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x944B 10960 bytes
SHA-256: 04f2d6f1a27948278d973526a91ab27f4fef7793a6bdf098eb30ab725b68d057
font_02_sfnt_off0000b9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D6 16128 bytes
SHA-256: 8e021f57f300adb1afc1ec848a2b9841dcad6b18539f41be1221894160acb062