Malicious PDF — malware analysis report

Static analysis result for SHA-256 348290a2de1771fc…

MALICIOUS

PDF

43.6 KB Created: 2020-10-25 16:28:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 6b5d88a7bab157a75b8dfa816ba24508 SHA-1: 5185b6055fc1531e176dab38514f0e9e524a00fd SHA-256: 348290a2de1771fc061d7b87b3a36bd7791e1253076e11690cd111fad71cf49d
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.link/123?keyword=netflix+cracked+apk+free+download In PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/goxip.pdfIn PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/4645273.pdfIn PDF document text
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/040d7.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/mixabiv-neziselazipi.pdfIn PDF document text
    • https://vadurevagide.weebly.com/uploads/1/3/3/9/133999829/sunaka-totagokavimo-bifedawokota-sumavixamosimef.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/bimumuwijujonilad.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c02.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c02.bin)
    • https://s3.amazonaws.com/nitajosasa/shri_hanuman_chalisa_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/xotapogojovabobuwef.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/occupational_safety_and_health_act_and_regulations.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/sailor_moon_manga_japanese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a37617-0e71-4630-80a2-30405afb41ae/98557886967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a569dc06-85e6-42e8-987f-56691f44e25e/dakenesijekiwaroged.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4be103d-e126-4136-a66c-c656e3b8d42d/selexuboraluxawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f28fdad8-3700-4372-a34c-e7d6052f3b50/kejabilubol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6590b0fd-caf1-49a8-beb4-7a35d06eca94/41868721183.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/kawemexusa.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/24611676157.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/samsung_galaxy_s10_user_manual_download.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/65200045140.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_off00006c02.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C02 5164 bytes
SHA-256: 982d6975909aefb0f04a53d4c54e2c4c5dcabaa5c2a3ecefded05aa519c31915
font_01_sfnt_off00007db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB8 10380 bytes
SHA-256: 6bbbc3d68a46d7a654beb296acb525d3e95dc46de3221abf4f2915820d940bd8