Malicious PDF — malware analysis report

Static analysis result for SHA-256 b35a8df4d745ab03…

MALICIOUS

PDF

66.4 KB Created: 2020-08-09 12:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e307372dfe7b5312bbd2fbfe014f38a SHA-1: c9014b85b387e833f8410a635b6d798838aed4cb SHA-256: b35a8df4d745ab0328020bd1d3bdd5affad1aaf58d2722495c733388fbb39d92
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector URL, 'https://ttraff.cc/pify?keyword=access+consciousness+preguntas+pdf', which is flagged as malicious. Additionally, the document exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=access+consciousness+preguntas+pdf
    • http://files.helenmccreery.com/uploads/1/3/1/0/131070845/limonelifofugogori.pdf
    • http://files.orizoncenter.net/uploads/1/3/0/7/130739598/sunaziboj.pdf
    • http://files.identitycrisisundone.org/uploads/1/3/1/8/131872149/rasoloma.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/fokabatanibilabunajav.pdf
    • https://cdn.shopify.com/s/files/1/0434/3463/9522/files/alu_alu_packing.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/zewejojojaxox.pdf
    • https://cdn.shopify.com/s/files/1/0436/5837/9417/files/19541922095.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vakijuxek.pdf
    • https://cdn.shopify.com/s/files/1/0439/4395/2539/files/sebux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/neretidesalefadim.pdf
    • https://cdn.shopify.com/s/files/1/0431/9284/4448/files/how_to_delete_groove_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/45601497804.pdf
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/rozaxerafegitovefira.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_off0000a31d.bin
5a92c85313948f72a4c31c69339b5a0b916daa5e1202276335f6dc40d48c2a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA31D 5280 bytes
font_01_sfnt_off0000b51f.bin
22af49a3faae5919dae6fbfe9f374bc5af9ed1318855aa0df4dd823753a1721b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB51F 2708 bytes
font_02_sfnt_off0000c08b.bin
be74f16c4acad8f6f378b00f566cb9725fc2e1664c08c8363bb5f29527a91951		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC08B 10804 bytes
font_03_sfnt_off0000e573.bin
569b73f965e4edd202bd5b147228be71cf58be4cd74f7d138c1d3fd9f0eab53c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE573 16548 bytes

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