Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0962623396fa44e…

MALICIOUS

PDF

57.1 KB Created: 2020-08-11 05:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46cd6cb528b9f20a01501a25ee818d89 SHA-1: 785e4a70fbcba86e691b9d9612b3c1dab52e38b4 SHA-256: a0962623396fa44e3d9ed6d87e81820f2bbadd2604df4cc3d4ef20307502bcfa
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=android+studio+3.+5+tutorial+pdf'. This link is embedded within the document body, which also contains numerous other external PDF links, triggering a PDF_SEO_LINK_FARM heuristic. The primary malicious link likely serves as a lure to a phishing or malware distribution 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.cc/pify?keyword=android+studio+3.+5+tutorial+pdf
    • http://files.appletreecontractors.com/uploads/1/3/1/6/131607712/9709263.pdf
    • http://files.dearborn411.com/uploads/1/3/2/7/132740860/xokagilo.pdf
    • http://gexagalul.rbigroup.biz/uploads/1/3/1/3/131380213/7799dd5d88.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/vaxunirujubido.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/33310358930.pdf
    • https://cdn.shopify.com/s/files/1/0431/3835/1255/files/zopepikuxel.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/48342645596.pdf
    • https://cdn.shopify.com/s/files/1/0435/2845/4298/files/sezinutezawakeza.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/xelijebeduporowogavo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekerumukin.pdf
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/subject_verb_agreement_worksheet_for_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0434/1216/0679/files/kenoritokawojarizasami.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/user_name_and_password_nod32.pdf
    • https://cdn.shopify.com/s/files/1/0447/9015/3365/files/branch_manager_roles_and_responsibilities.pdf
    • https://cdn.shopify.com/s/files/1/0447/5063/5162/files/cisco_ccna_voice_lab_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/ignition_system_in_ic_engine.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdf
    • https://cdn.shopify.com/s/files/1/0431/0014/3777/files/makuguripixikelotiv.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_off0000a012.bin
0504e7b8314f3ac341a41fafb823bc36af56b61c6cc669afae3533ad5e08024e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA012 5344 bytes
font_01_sfnt_off0000b24e.bin
a7f6a48ea7d03a427760824c30d0572da825b017afd220a691f370b76bd9e7b7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB24E 10928 bytes