Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e7d6b0f428eccc…

MALICIOUS

PDF

47.6 KB Created: 2020-10-02 07:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9555d7047a88777f25b33bf121875323 SHA-1: 3c31b32cbf10896cf3747788313154f9b57b7f88 SHA-256: 10e7d6b0f428eccc3ad1f608102f43d66ac6984b54543ca403209c41fcae0267
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://gettraff.ru/strik?keyword=software+engineering+notes+pdf+for+mca In PDF document text
    • https://site-1036772.mozfiles.com/files/1036772/77446917126.pdfIn PDF document text
    • http://files.thestudiosatfshh.com/uploads/1/3/2/6/132682070/tejeguferal.pdfIn PDF document text
    • http://files.celebrationandpartysupplies.com/uploads/1/3/0/7/130775598/kafijadaj_wezagafosegezek_godelevin_noludasomufuxog.pdfIn PDF document text
    • http://files.saintmatthewsfamilyministry.com/uploads/1/3/1/4/131453456/fd01e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5104/7329/files/46241478406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8464/8100/files/paypal_hack_apk_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/arcadia_tom_stoppard_full_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2780/7646/files/pcpsb_parent_command_center.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/lofelonufovawusisuxopoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5639/0040/files/kahuna_grills_charcoal_smoker__grill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9230/6846/files/gesabowekovusaliku.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6285 5428 bytes
SHA-256: 8ab09a6f0323f0fc2692ac33dce96db6c9b0c74200efb7939d224f624ec2e2e8
font_01_sfnt_off000074e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E5 14764 bytes
SHA-256: fb621ed666f683242e522701e4b043f4d3fbc8b26ff85e87debdcfd0efab373c
font_02_sfnt_off0000a32f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA32F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34