Malicious PDF — malware analysis report

Static analysis result for SHA-256 d44a155229c3d8f8…

MALICIOUS

PDF

91.3 KB Created: 2020-08-09 17:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eee6b15d4eb9323815485de789f696f SHA-1: 66d9bb202ce83b63e2f0061870c11f7cc3afd8fe SHA-256: d44a155229c3d8f8599895bd71a856e3a93b6649019e70c701b60936f4022ca7
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates an attempt to redirect users to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of a PDF link farm heuristic further suggests this document is part of a larger scheme to drive traffic to external sites.

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=language+acquisition+versus+language+learning+pdf
    • http://files.spiritrestretreat.com/uploads/1/3/2/6/132681826/8435354.pdf
    • http://files.westcountyschoolgardens.org/uploads/1/3/0/7/130740221/razinexux-liwule-mojumanakilu-vepum.pdf
    • http://jusitoku.kioloamarinerescue.com/uploads/1/3/1/1/131164250/jufuvozevumeviwun.pdf
    • http://sireta.straccwa.org/uploads/1/3/2/6/132682883/judogenomajixoribudu.pdf
    • http://files.shakespeare-garden.com/uploads/1/3/1/8/131871919/ligorinanameke.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3021/files/92027823485.pdf
    • https://cdn.shopify.com/s/files/1/0434/1432/3356/files/66070059368.pdf
    • https://cdn.shopify.com/s/files/1/0434/1995/9454/files/32526745564.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/galvanic_corrosion.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/6471439964.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/56523117687.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/berujixawajibexuxutuzogar.pdf
    • https://cdn.shopify.com/s/files/1/0430/9109/9805/files/romasuvibamoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/9292/4821/files/indeks_bias_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/62941584871.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/12040339077.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_off00012539.bin
a301b15588f3d7e0cec8567d58f4efdf303459e51fc9983e6d68a4c7e1d9c7f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12539 5448 bytes
font_01_sfnt_off000137db.bin
569cce37b46a711e66d9317652be45fb63822c5aa2572ccd8813bc92d8fe9964		 pdf-font-stream PDF embedded font (sfnt) at offset 0x137DB 11928 bytes

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