Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae568a0c94ef051…

MALICIOUS

PDF

43.9 KB Created: 2020-10-21 07:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0b0043c01d6c05e1c12c2abd3142a2ca SHA-1: d12830c4bb58a3460a4accd8765ac1d3c3e228ef SHA-256: fae568a0c94ef05114e076d727f494e047d1c07db84ebe57402c07f30de1e233
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://cctraff.ru/pify?keyword=anlage+e%25C3%25BCr+2020+pdf+download In PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/5518039.pdfIn PDF document text
    • https://digafixi.weebly.com/uploads/1/3/0/7/130776371/2ca16d7ea56f64e.pdfIn PDF document text
    • https://gobumireg.weebly.com/uploads/1/3/1/3/131383916/lixot_riniborovaza.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/ruronuxigefaza_galewuxobomu_magikapisi.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/ebaf340.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006990.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006990.bin)
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/22786692988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4073/7957/files/saforajinog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/piwaga.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/8005010206.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/walerizetatuxivosi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/38232482121.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/29221357426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8750/4583/files/subetiwede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4893/4819/files/electrolux_microwave_oven_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8958/2998/files/gusojomonufu.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/53748285267.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/balanced_scorecard_conceito.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/understanding_and_using_english_grammar_5th_edition_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/rbi_grade_b_2019_notification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/0318/9911/files/osu_minimalist_skin_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/42379998068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/weledovimetomidikolopon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8331/7926/files/89246167115.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 extracted file (font_00_sfnt_off00006990.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6990 5504 bytes
SHA-256: 8f0f5383a689b71700b6378d83aa8802d4bcb52a8efca947876bab20d1b95b54
font_01_sfnt_off00007c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3A 10952 bytes
SHA-256: 2f55d7efce93e44cbf24f062570afbd367d70915d026b44ef7cbd508ab130345