Malicious PDF — malware analysis report

Static analysis result for SHA-256 811bdfd242882652…

MALICIOUS

PDF

50.8 KB Created: 2020-08-10 16:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9eec3d6b8e872a708de84c0caa9f8573 SHA-1: b9255d6dae21050a69e10d9f92ca5a1220bb4ab3 SHA-256: 811bdfd2428826521933b16217385f54ea46300cc3053d38a33bac1e32aadd9f
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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=aerobic+exercise+definition+pdf In PDF document text
    • http://files.elenafoukes.com/uploads/1/3/1/6/131606416/6437788.pdfIn PDF document text
    • http://files.cultural-fibers.com/uploads/1/3/1/4/131406202/kowezo_figorisemixakap_ratosamak.pdfIn PDF document text
    • http://jisil.northwestmontanagoats.org/uploads/1/3/1/4/131483281/jisulizasimo.pdfIn PDF document text
    • http://xupivis.motley-arts.com/uploads/1/3/0/7/130776757/6707324.pdfIn PDF document text
    • http://files.planetdotjewelry.com/uploads/1/3/1/4/131437474/muwaz.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/1/0432/6372/1637/files/24046386270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2030/3006/files/nanoleripewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3518/0703/files/bijifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4609/2445/files/quickbooks_2017_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2607/1199/files/80106655724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/rawati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/gijufasutamupagujugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5134/3269/files/wabofomalevijisoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/duvuwatew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/47508747905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/bamigowasozakor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/oliver_and_company_cast.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_off00007fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE4 5104 bytes
SHA-256: 1018af295476b8b8e5335fc3477336ef8fe0ff7b50784b81888b88a2be1faa79
font_01_sfnt_off00009150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9150 14544 bytes
SHA-256: dbf40ef29094e2f10a06b63d6c702780a726a620a9fe383f0093b963d52066df

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