Malicious PDF — malware analysis report

Static analysis result for SHA-256 3914ecf7bda19cac…

MALICIOUS

PDF

71.7 KB Created: 2020-10-27 11:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: dae222775a35d273dcfc63798d81bd19 SHA-1: b0e384331868ee68afb009f0bbf1b8bd0b737606 SHA-256: 3914ecf7bda19caccbff62f36e62f154f9a0e748eb6d7978ffe9a63f0108ac97
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=eberron+world+map In PDF document text
    • https://deximuxinudob.weebly.com/uploads/1/3/0/7/130739142/simafexegugew-jagedipobufez-vojaremafojiwe-faxaz.pdfIn PDF document text
    • https://vemewibikem.weebly.com/uploads/1/3/0/7/130776349/8041776.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/5065528.pdfIn PDF document text
    • https://tumegifokax.weebly.com/uploads/1/3/4/2/134235775/sabozejuruzab_tavepipuraxebep_sagisotanu_pupulun.pdfIn PDF document text
    • https://vukuzimina.weebly.com/uploads/1/3/4/1/134109202/3722131.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403684/normal_5f9566ac0c579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5f88d3bfec186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383802/normal_5f8bdaa9b2cae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5f922a8ab449a.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000ccc4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000ccc4.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0001028d.bin)
    • https://uploads.strikinglycdn.com/files/0b5d4cbb-edcf-4a14-abb3-c9370f93bcaa/xamaparur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db17f399-d072-437c-b95b-0b70debe24be/69099687251.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e865b62f-5ad9-4630-9a4a-a980eeb2373c/56171688551.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/devi_bhagavatam_book_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/left_ankle_sprain_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/b_m_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/shark_tank_product_analysis_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7072/9621/files/53549563680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5940/7765/files/lelerawaberizajexev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0962/8570/files/loxokizusek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8696/3622/files/play_store_apps_download_old_version_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1114/3842/files/macbeth_book_in_bangla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/black_clover_finral_fiance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0809/7956/files/53243325574.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_off0000ccc4.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC4 4776 bytes
SHA-256: 1edd0393ec1adc17bb2179eb37c39cc8ca0410f8fa28a99214d9cc25ac4a7032
font_01_sfnt_off0000dcdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDC 11012 bytes
SHA-256: 3dcd8a71495d96828158534629146f95f6f8f6c3dfbb223211cb8ee2f33d1eb8
font_02_sfnt_off0001028d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230