Malicious PDF — malware analysis report

Static analysis result for SHA-256 954286a41795c321…

MALICIOUS

PDF

34.9 KB Created: 2020-08-09 08:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a95892a7e7985ef29ff7ccf1512420ce SHA-1: 2a780b6eb076e86ee84ff15e6f64a8305e8a64c6 SHA-256: 954286a41795c3214b21175feaa727470c4f63a102f67528aebb7a0bf9edc0dc
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm for SEO manipulation or malware distribution. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious sites. While the document body contains seemingly benign text related to ukulele chords, the embedded links and heuristic firings strongly indicate a malicious intent to lure users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=dictionnaire+accords+ukulele+pdf
    • http://files.canadamt.com/uploads/1/3/1/4/131409574/5612647.pdf
    • http://fesope.juliergoddard.com/uploads/1/3/1/4/131438405/84591c5.pdf
    • http://files.polly-put-the-kettle-on.com/uploads/1/3/1/3/131398423/ligawuvavomu.pdf
    • http://files.sussexflowinitiative.org/uploads/1/3/1/4/131452785/xuxen_lapanifapo_sezesuxajeru.pdf
    • https://cdn.shopify.com/s/files/1/0433/7536/2198/files/rekeva.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9201/files/sentencia_alsasua_supremo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdf
    • https://cdn.shopify.com/s/files/1/0430/7822/1973/files/msi_super_charger.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/94677122942.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/mopabotifimofuzufetufek.pdf
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/16838637023.pdf
    • https://cdn.shopify.com/s/files/1/0433/6133/7498/files/stardew_valley_quality_of_life_mods.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/2009_honda_accord_maintenance_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/wabavogarefanipavurose.pdf
    • https://cdn.shopify.com/s/files/1/0435/0217/4374/files/46548023534.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_off00004a5a.bin
d8993f57bde297d52c0a2b198f92d2dbb2c8383b19cf39ed4889ae8efd4c278c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A5A 5212 bytes
font_01_sfnt_off00005c2b.bin
4ed0cdd6d8fb0d0b6c710be3652cd078c5b0a87479c64c1ee83d6b3cfd77f1c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2B 10068 bytes

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