Malicious PDF — malware analysis report

Static analysis result for SHA-256 facaa26ea0b4cb01…

MALICIOUS

PDF

38.7 KB Created: 2020-10-07 14:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 60aa42219a10668f3ba28d0edd8aae5c SHA-1: 7284874aa724f1a1c94d5063a2d21fba4227c6be SHA-256: facaa26ea0b4cb01715d6ec93b3220c56f89c1ed8f92f1f15b4d508d9f11299e
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=unmix+drums+crack In PDF document text
    • http://dirodaxuj.mgdinglegbhughescollection.com/uploads/1/3/2/7/132740405/9e9177fb235.pdfIn PDF document text
    • http://files.earthandwaterdance.com/uploads/1/3/1/4/131406610/4398f.pdfIn PDF document text
    • http://files.womensbalancehealth.com/uploads/1/3/0/7/130739212/1b7e5fa52.pdfIn PDF document text
    • https://site-1036805.mozfiles.com/files/1036805/61752211513.pdfIn PDF document text
    • https://site-1036775.mozfiles.com/files/1036775/48355941727.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/nilivaduvixa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3113/3351/files/black_ink_crew_chicago_season_5_episode_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1698/6534/files/estudio_biblico_sobre_adorar_a_dios_en_espiritu_y_en_verdad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5768/4385/files/610_credit_score_mortgage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6147/6509/files/97363778107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6388/1115/files/trigonometry_exact_values_chart.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_off00005a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6D 5176 bytes
SHA-256: 655df669e91db9f92eb13bd6c8066589844ce1f808b31cb3fbcd74cca88518c6
font_01_sfnt_off00006bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF8 10136 bytes
SHA-256: 873b7a0e72d50f18ebab727856dcb01691d86605e292b15f1f4f5c7ddf61ea29