Malicious PDF — malware analysis report

Static analysis result for SHA-256 9538760458e24669…

MALICIOUS

PDF

41.8 KB Created: 2020-08-08 01:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1e05595f813a358bc818a14e00b1980 SHA-1: ccb697f5222fb1c774b1b1ba44adfe5dfec49bd9 SHA-256: 9538760458e24669d71092c4a8947bda73ba7d3d1fed04eb819d02cde45aeae5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector service. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests the document is designed to lure users into clicking malicious links, likely leading to further malware download or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=interactive+spatial+data+analysis+pdf
    • http://ruwusizu.blitzbuildcapecod.com/uploads/1/3/1/3/131398008/lasifubasukobu_xefamiranufamof_livopiveseloxu.pdf
    • http://files.tales-trails.com/uploads/1/3/1/4/131438308/7685999.pdf
    • http://files.corriveaucreations.com/uploads/1/3/0/7/130775953/nefawonuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4666/6389/files/songbird_fleetwood_mac_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/2879/0946/files/18574096306.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/44636982162.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/edit_text_and_images_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/tamar_king_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/person_centred_theory_in_counselling.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/61877703627.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/mofozazox.pdf
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/legit_csgo_skin_sites.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/84254205849.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/bloom_s_digital_taxonomy.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9507/files/15874467650.pdf
    • https://cdn.shopify.com/s/files/1/0434/4859/8678/files/22868462827.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065a1.bin
1da956e4dc9b4123f17c336b4323269249541f09f43a567300bf66acb3473532		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A1 5248 bytes
font_01_sfnt_off00007796.bin
ef319d42ef6a3ffa9f0d2806cb8e39739cb2f3849599736c8ff1571796b5bc2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7796 10136 bytes

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