Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d09f6968ed27dff…

MALICIOUS

PDF

275.9 KB Created: 2020-08-12 06:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62b534b0c3ac7e50fc2999d57a4496e0 SHA-1: 4b68876bc868068d7b3ffb155b10ec06d7676bf8 SHA-256: 5d09f6968ed27dff32ccfaa0ec21b2910607c2641defeadceb510c294e2c3426
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=angina+pectoris+guidelines+pdf'. The document body, though heavily obfuscated, contains this URL, suggesting the document's primary purpose is to trick users into visiting this malicious site. No scripts were extracted, but the presence of a malicious URL strongly indicates a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=angina+pectoris+guidelines+pdf
    • http://files.yfbf.org/uploads/1/3/1/3/131383619/128451.pdf
    • http://jowipefe.sladefanclub.com/uploads/1/3/0/9/130969754/bexevul.pdf
    • http://files.pamelaplattstudio.com/uploads/1/3/1/3/131380305/saviwazulip.pdf
    • http://files.rtqhseconsultancy.com/uploads/1/3/2/6/132682861/ginubikawe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7545/files/abstract_art_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2434/files/baba_yetu_score.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/13236124364.pdf
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/jan_assmann_cultural_memory.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/33357114930.pdf
    • https://cdn.shopify.com/s/files/1/0432/2947/9076/files/pozetemabipagusubuwum.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/61405519778.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/bronchiolitis_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/6434/5255/files/luribekodedadutim.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/nijipebiwezoserelusiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/3010/2694/files/giwaxegu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/zebiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/12261274823.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003e4a5.bin
a2896ba852d05a1c7959c1e492c84c74a538176117e1361c97a4ef4ed9941a4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E4A5 5312 bytes
font_01_sfnt_off0003f6bc.bin
2262aba6cd2b528ee307cae1805e079f9315b9335d3164f6c4f7232b9c32b362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F6BC 15696 bytes
font_02_sfnt_off00042835.bin
98bbda09e34957c2c47eea570891e411fa41ced272e9777bbef021ce7395b75a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42835 16148 bytes

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