Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6bdf2f69cf9df9…

MALICIOUS

PDF

43.3 KB Created: 2020-10-27 02:01:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 36b64c249b8e5570abbbe101b03faefd SHA-1: 8e81af97c77e09d1dba3a998094bb2f9e6f7f83a SHA-256: 1c6bdf2f69cf9df9278bf942b1ca6f2c89662e70dfda6adfb67ee586d04d5a05
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://cctraff.ru/123?keyword=independent+contractor+insurance+agent In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370744/normal_5f915398be45b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5f8f79c293bdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5f902ea8b59af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5f975e3f6bea9.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/590526.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/a2bf9e7b5b332.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/ninix-jakofa-rekano.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/suzusenasunofo.pdfIn PDF document text
    • https://patelevenimo.weebly.com/uploads/1/3/1/4/131437444/vaxivuvozureg.pdfIn PDF document text
    • https://jelafabonopavu.weebly.com/uploads/1/3/4/4/134443296/misitejopibe.pdfIn PDF document text
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/wokovidino_medoze_futubunute.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c5c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c5c.bin)
    • https://cdn.shopify.com/s/files/1/0498/2626/7291/files/sejedenewugomawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6599/7973/files/fadigasigali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6096/files/raid_movie_mp3_songs_download_wapking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0555/6908/files/internal_and_external_communication.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/digital_electronics_projects_using_flip_flops.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/48341001668.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/hey_jude_piano_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/icao_annex_6_part_1.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/zufan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2307/2921/files/the_divinity_code_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6773/6225/files/nagaland_state_lottery_evening.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6785/8334/files/ragigiretalajakigomal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7481/7693/files/jiluwilarikawijad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6310/7480/files/gogalefijizakikipejewu.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 extracted file (font_00_sfnt_off00006c5c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5C 5144 bytes
SHA-256: ee2b74294f901e8e60f7a2c03379c090168bea027ee2860181c6fb3061aca60e
font_01_sfnt_off00007dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD9 9776 bytes
SHA-256: 1edb4433693b833e2eac8fc00ca5b5950d00c9804b36b31061d81ba850973d9d