Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcaf007ffe627cc7…

MALICIOUS

PDF

45.7 KB Created: 2020-08-10 03:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 725d13e44d238d5fca6580a96725c01f SHA-1: 2be5b52162573e9778d08f4fb680cc02dd65a430 SHA-256: dcaf007ffe627cc7e69d32f64c4eda09806f9af06bb89ee618f3670852005f58
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it's a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'pdf to word converter' and the malicious URL, suggesting a social engineering lure. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse to mask malicious activity.

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=pdf+to+word+converter+for+mac
    • http://files.jawsmechanical.com/uploads/1/3/0/8/130814596/1508986.pdf
    • http://files.jeninottphotography.com/uploads/1/3/0/8/130813601/05cc34bc4b.pdf
    • http://files.thehitsvillesoulsisters.com/uploads/1/3/1/3/131379678/77300.pdf
    • http://files.yvettephotography.co.uk/uploads/1/3/1/6/131606866/xoxidefoge.pdf
    • http://files.panisangelicuspress.com/uploads/1/3/1/3/131384018/7094245.pdf
    • https://cdn.shopify.com/s/files/1/0428/5091/0364/files/spelling_bee_words.pdf
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/american_heart_association_bls_instructor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/4980/3166/files/jositamisezibure.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/jelemutikuvasaluvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/56833816174.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/48755506741.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/ruwan.pdf
    • https://cdn.shopify.com/s/files/1/0447/0643/1130/files/edit_hosts_file_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/lafivupabazeporiged.pdf
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/nifetamedupefezukonup.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/21622035700.pdf
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/26417261342.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/vowisukilalasudizo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/momuxukanokavapekare.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_off0000753f.bin
ee47f43dcc16eed4914f429f3569eb870820717c5a6ec0029b02d13737f4e9a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x753F 5112 bytes
font_01_sfnt_off000086a2.bin
c7cbb03b5d4eef86c024bb7ba2326cb6a93bef16572404b6361830604cc1e14f
pdf-font-stream PDF embedded font (sfnt) at offset 0x86A2 10260 bytes