Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b8002fae61c07d…

MALICIOUS

PDF

53.7 KB Created: 2020-10-10 22:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: ab967414466a57e0d4b0f066e96902a3 SHA-1: 0e845b0ea78ab0f480894d5061e525bb7abbac33 SHA-256: 00b8002fae61c07d6a333a2e5498a71c82ddf65d2b444150751670a093d0037a
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9879

Heuristics 4

  • 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.
  • 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=the+treasure+of+lemon+brown+text+ana In PDF document text
    • http://files.tandhathletics.com/uploads/1/3/1/4/131483229/vojul-kumejekuvugato-kujunekomigo.pdfIn PDF document text
    • http://files.beverlyhughesartist.com/uploads/1/3/1/4/131406684/terolalozo.pdfIn PDF document text
    • http://files.buffalocommonspress.com/uploads/1/3/2/6/132682070/mexofudoji-jomulatewukizor-falorazige-rekudaxotasazi.pdfIn PDF document text
    • http://files.traderhsm.com/uploads/1/3/2/6/132681951/3123144.pdfIn PDF document text
    • http://files.aldabranursery.net/uploads/1/3/2/7/132740548/6462463.pdfIn PDF document text
    • http://files.maitriyogachester.com/uploads/1/3/1/4/131438680/95abb07.pdfIn PDF document text
    • http://zuzos.erinlyman.com/uploads/1/3/1/3/131382257/1418255.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000975e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000975e.bin)
    • https://cdn.shopify.com/s/files/1/0480/7219/6260/files/rise_to_power.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2446/8126/files/el_faro_ship_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8357/2409/files/pse_viper_copperhead_crossbow_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3649/1431/files/scholarships_nevada_2019.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000975e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000cbcd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCBCD 3986 bytes
SHA-256: 0aa436e0a91ce2e0e7bb2fcac1ec9da587ef2a62dc557763fd65a773c62056b9
font_00_sfnt_off0000975e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x975E 5256 bytes
SHA-256: 9810cc1c630f9f72ec9c45b22d7bb7269d1ef41de9812de76e388fca84c685cd
font_01_sfnt_off0000a930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA930 10068 bytes
SHA-256: 3c584bf94d6317a4edb61ab572e499a80dc2f5d810f2cd460483cbfef7f01fba