Malicious PDF — malware analysis report

Static analysis result for SHA-256 221cf44ba125ee3e…

MALICIOUS

PDF

43.6 KB Created: 2020-11-06 02:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f988ec63af31986165384d708029cb9c SHA-1: d4077058c4115ec983d7caaba1681f5d286146d7 SHA-256: 221cf44ba125ee3e9cc0f3330f9d46d5ce7c66e5427346cbf4beca796edff5db
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/wb?keyword=printrbot%20simple%20metal%20bed PDF link annotation
    • https://wotafoxig.weebly.com/uploads/1/3/4/3/134306194/d06bbc5585.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/jixerubowi/motor_insurance_policy_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/70475612733.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/blade_runner_2049_watch_online_dailymotion.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/bombay_high_court_cause_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48fcdd64-0975-401e-880d-ebd09d3d6d20/dularelifulabuxusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81825e91-ba5e-4c46-9c59-b3eda290662e/antecedentes_historicos_de_la_tanatologia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049aa904-26e9-47a3-b2e0-47e467bc7b56/81010859319.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/86393841330.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/496c68a2-ef64-41e6-a4ef-c229947b320f/arapahoe_county_treasurer_office.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/74447363753.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/cal_poly_pomona_housing_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d7c164-1e97-4f7d-b6b5-3bef984e1875/vipuwujutazozefis.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_off00006b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3F 5248 bytes
SHA-256: 9828331c271dcc5cd211f13b2f229b16a762321d0dd7f259890bef4761afbcba
font_01_sfnt_off00007cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 10808 bytes
SHA-256: 589fdd482216fef1ff6bb58a7e00c3973f82cea873a15900472c550fe8ce4613