Malicious PDF — malware analysis report

Static analysis result for SHA-256 12db5473c4ab8eff…

MALICIOUS

PDF

43.5 KB Created: 2020-08-20 05:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7e8208f012209823c07bd4d82710abd7 SHA-1: 26a9a03cfd354565adecb69b10bfc7b80c27c148 SHA-256: 12db5473c4ab8effdbd4585c27118e0259d7fa7772a81116483866e817c93dd8
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.com/pify?keyword=arduino+lcd+shield+datasheet In PDF document text
    • http://fojepaj.fighr.org/uploads/1/3/1/6/131607600/lukefigepid-fexorobuwemile-liwavuzemu.pdfIn PDF document text
    • http://danoriri.drinkinggames.beer/uploads/1/3/1/4/131437462/funulefufubake-sekivuwi-sukivagedekuwaz-jufikewepawub.pdfIn PDF document text
    • http://files.invictahealthcare.net/uploads/1/3/1/3/131379381/vufukov.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/1/0430/5823/3493/files/firewall_security_policy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3651/files/konsensus_asma_pdpi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1989/files/81739605658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/43599898434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/pefuzupareruxazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7786/0516/files/kulomikakuzatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4053/8773/files/grammar_for_learning_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3173/9033/files/dirubovogurudemowuxuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/fawegupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/steam_validating_subscriptions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/matotipiv.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_off00005da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA7 4900 bytes
SHA-256: 715dac49f94e661e07e9e7dbf8483d41c32b59aae07c017f8d4bc160d5fbcacf
font_01_sfnt_off00006e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2E 10916 bytes
SHA-256: 5e77409dc9d7e491ffa7053987f538162065288cdcd48486257a3f6f58b57003
font_02_sfnt_off0000933f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x933F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.