Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70ff596c62f4e8b…

MALICIOUS

PDF

42.2 KB Created: 2020-07-10 11:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dbc059de7b7402366d42107b038689a SHA-1: 6806fd152e0b690bf33a219c1c0459202ea6021b SHA-256: a70ff596c62f4e8bac74fc052153882544f451a6dabbac66919915ddcca713aa
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs that point to a link farm designed to redirect users to malicious content. The presence of a 'download button' heuristic further suggests a social engineering lure. The primary redirector URL is https://ttraff.com/wb?keyword=filehippo%20pdf%20combine, which likely leads to further malicious sites.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=filehippo%20pdf%20combine
    • http://files.trebalmusic.com/uploads/1/3/1/4/131437319/1777216.pdf
    • http://files.uccdudley.org/uploads/1/3/2/6/132695874/nuxajexela.pdf
    • http://files.glitzstudiodesigns.com/uploads/1/3/2/8/132814768/8288125.pdf
    • http://files.shaksygroup.com/uploads/1/3/1/6/131606059/solekofakujug-xeparamerovew.pdf
    • http://files.southfloridapoetryjournal.com/uploads/1/3/1/4/131438423/duzezipagugivinekeve.pdf
    • http://files.croninsclass.com/uploads/1/3/1/4/131410606/360cc4e.pdf
    • http://files.getrealcoach.net/uploads/1/3/0/7/130775342/ledemisinivan.pdf
    • http://files.4-ucorp.com/uploads/1/3/0/7/130739567/7385382.pdf
    • http://files.latitudetravelplanning.com/uploads/1/3/1/6/131606087/lagedapipapixa_goxoburan.pdf
    • http://files.gammaetaomegaaka.org/uploads/1/3/1/6/131636990/5608641.pdf
    • http://files.thesilkfamilyproject.com/uploads/1/3/1/4/131437740/livig.pdf
    • https://zevepate.files.wordpress.com/2020/07/monub.pdf
    • https://sorexujuselu680172323.files.wordpress.com/2020/06/zalobizotexufep.pdf
    • https://dilupojuze.files.wordpress.com/2020/07/desiz.pdf
    • https://ronezas.files.wordpress.com/2020/06/pisirok.pdf
    • https://pofiwofuleb.files.wordpress.com/2020/06/kizuzoduz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56325204281.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42262915950.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevanedinuwisuvajolow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pagujusevidunevaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39086675177.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_off00006954.bin
1defdefc1a0ef29776478446e431b81b04cc0f2addad361e48e9a124c7bc02e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6954 4712 bytes
font_01_sfnt_off00007924.bin
3702e27bf39d12b2aca2440131f8b979ff479519ac567d040eed34b7781d0db4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7924 10148 bytes

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