Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd7a291878fb7a9…

MALICIOUS

PDF

42.9 KB Created: 2020-07-29 23:55:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c10be86eddb9598142d058fd1a65e47f SHA-1: a402338a37623934cc9bd1d9b30129e7496cd87a SHA-256: dcd7a291878fb7a9cadeaa32ccf97eec70eb66995be66ea536b0502685e0a1d6
150 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector (ttraff.com), indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to 'Comptine d'un autre ete piano pdf'. The presence of a large number of external PDF links also suggests a link farm SEO tactic to distribute malicious 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.com/wb?keyword=comptine%20d
    • http://files.onthemoveholistichealth.com/uploads/1/3/2/8/132814071/xixakaletuli_jinorofugule.pdf
    • http://files.bdonovanphoto.com/uploads/1/3/0/7/130738850/7271678de.pdf
    • http://files.indianaliteracy.org/uploads/1/3/1/4/131410952/mubixosivevirag-lozesemenurog-nikuf-zobovizon.pdf
    • http://files.damonwintermusic.com/uploads/1/3/2/3/132303045/zotetosumunefasu.pdf
    • http://files.stwxstrategic.com/uploads/1/3/1/0/131071137/8006912.pdf
    • http://files.damonwint
    • https://cdn.shopify.com/s/files/1/0438/5443/0368/files/68737073954.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40948382406.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/57133756779.pdf
    • https://cdn.shopify.com/s/files/1/0434/9103/3250/files/buridefe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4864/8354/files/fimujuliwoxetunelinizex.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/nigimivopunixubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/mufamepopuwololaxegowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/63123497297.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0438/4237/1741/files/95765844114.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/bakit.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/panejomerudemonakukojil.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_off00006250.bin
57c870c493f25f9c2bb49d91548b4d5a84a214f580a26e47196d8f9d7fbb53e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6250 4916 bytes
font_01_sfnt_off000072f2.bin
1c6efcf00c4d20248c3e0746becd508e37938ab4feaa3124c8eade9964837b60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F2 13880 bytes

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