Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5af7cc0bfad38f8…

MALICIOUS

PDF

51.2 KB Created: 2020-10-17 06:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 228951369c263be052da2cbd99f7d3b3 SHA-1: 144be5185b1fb400a6949086adb0a6e43f284c50 SHA-256: d5af7cc0bfad38f8a129cc2e1ecff3bc308781ad6f0bc34333a0a1f32694a053
130 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a download for a comic book. This is further supported by heuristics indicating a malicious redirector and a link farm designed to appear as legitimate PDF content. The document body, though heavily obfuscated, contains the lure text and the malicious URL.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/123?keyword=queen+bee+comic+book+pdf
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/xijilopofux_vabozudorog_kuzugemixonagi.pdf
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zidebesirolabavo.pdf
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/3314470.pdf
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/5117028.pdf
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/6fdf5fb01.pdf
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdf
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/108d423a893.pdf
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/lasezuvafuji_kabonudisa.pdf
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.pdf
    • https://cdn.shopify.com/s/files/1/0495/5255/6184/files/makalah_pupuk_kompos.pdf
    • https://cdn.shopify.com/s/files/1/0435/8212/8291/files/vozaro.pdf
    • https://cdn.shopify.com/s/files/1/0496/6226/3459/files/85332470851.pdf
    • https://cdn.shopify.com/s/files/1/0432/4202/9215/files/enterprise_car_rental_e_receipt.pdf
    • https://cdn.shopify.com/s/files/1/0439/2602/8456/files/nasekisofigijuli.pdf
    • https://uploads.strikinglycdn.com/files/8a807f10-c687-4f21-93c3-734bbbf29256/9500162305.pdf
    • https://uploads.strikinglycdn.com/files/f179c8b3-a17a-4fee-8540-16265d3726c8/wazefebafopeponodaxe.pdf
    • https://uploads.strikinglycdn.com/files/5a93aa63-4703-4319-b646-0de761affee7/gusalu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006687.bin
cea3dbf0f8632b0ce07c207e024b2444c95b6b4d833af2804fc4fdb90b89034c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6687 4852 bytes
font_01_sfnt_off000076e4.bin
2387b168184b011eb7c95b22d7a9635da68ee46bb23f055e1924a42b8fd1e07d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 10764 bytes
font_02_sfnt_off00009bc4.bin
552e926f59ef53231249b6015cc51882b512f7a40c6b17c25f707dc25a221893		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC4 16368 bytes
font_03_sfnt_off0000b18f.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB18F 4324 bytes

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