Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4814f79e54f8ef…

MALICIOUS

PDF

191.8 KB Created: 2020-08-15 05:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5563bb80b520a457a1feefdb35ae5ad SHA-1: 3e736959b7a77f335c25dc26115baac3b431d47c SHA-256: 1a4814f79e54f8ef2b5f69424adbceae30788650d05f5d520ed2f787de92a285
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=americanah+summary+pdf'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 2

  • 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.
  • 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=americanah+summary+pdf
    • http://files.magia-metachemica.net/uploads/1/3/2/6/132695582/xazifadikos-mitako.pdf
    • http://files.bonneygirlphotography.com/uploads/1/3/2/6/132681204/sapoxorufewodod.pdf
    • http://files.incitecompany.org/uploads/1/3/0/7/130738711/a0600b132.pdf
    • http://files.sunsolutionsolar.com/uploads/1/3/1/4/131438260/683057.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/warframe_kubrow_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/xejururojemenevuvesu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0962/1664/files/pebopo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/efeitos_da_atmosfera_terrestre.pdf
    • https://cdn.shopify.com/s/files/1/0436/8737/9094/files/63146114962.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/psychology_of_web_design.pdf
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/new_york_city_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/94399039769.pdf
    • https://cdn.shopify.com/s/files/1/0454/6071/7726/files/fumogovaremebad.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/best_multiplayer_ps2_games.pdf
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/brunswick_school_of_dance_uniform.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
stream_007_off0002d20e.bin
f71b06078c23f538b03047cdc007535d35072d6f50558c631178247031e5a958		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D20E 19504 bytes
font_00_sfnt_off00029027.bin
3ec62d6a35e80a84a7199d97d62cd2610accbd2efaee9b2890d97f17406279b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29027 5456 bytes
font_01_sfnt_off0002a284.bin
27f7d3acf64cb30313116a5a40c92b62fce7b940c1e1dbaa5e4da44e6ffda50e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A284 15440 bytes

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