Malicious PDF — malware analysis report

Static analysis result for SHA-256 35d3acf91f982df1…

MALICIOUS

PDF

41.4 KB Created: 2020-08-31 13:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 481115692b053ee3cf37b115221e7324 SHA-1: 23c78ac2ab74abb23342ec71f723dffaefbc5529 SHA-256: 35d3acf91f982df1501e724abb8c6ef734e1f3ab61a9b3c96b515e8e4410150f
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised as a link to a color adjective exercise PDF. This indicates a phishing or scam attempt. The file also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to improve the redirector's ranking. No scripts were extracted, but the primary malicious intent appears to be redirecting the user to a harmful site.

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.com/pify?keyword=accord+adjectif+de+couleur+exercice+pdf
    • https://cdn.shopify.com/s/files/1/0431/8455/4135/files/aoac_official_methods_of_food_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/mystic_messenger_email_answers_indie.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/razutomoko.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/86781788020.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/robbins_basic_pathology_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/auditoria_administrativa_libro.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/sat_math_worksheets_with_answers.pdf
    • https://static.usrfiles.com/ugd/ad2ade_ba64cbe3007b4274aeebc7f40de9d3e6.pdf
    • https://static.usrfiles.com/ugd/38eac1_d7d43a40031142c89a5a23a98174931b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c098969beb74625957120feeb0af15d.pdf
    • https://cdn.shopify.com/s/files/1/0432/4202/9215/files/camera_lenses_101.pdf
    • https://cdn.shopify.com/s/files/1/0437/8597/8013/files/amazon_kindle_pc_to.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000575a.bin
63ada2e27970c5ddcf57903270586595378c797a1671f8f5e1ab636248188d1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x575A 5104 bytes
font_01_sfnt_off000068cd.bin
7f75ad570fde1cfe7e0bb9fcd22474b757f8f19828890a3063452e16cb258510		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68CD 1680 bytes
font_02_sfnt_off0000711d.bin
e8479c92f69c43461166f301f2cfa44bd06a95bc4a8aef71a590c897e41dffd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711D 12316 bytes

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