Malicious PDF — malware analysis report

Static analysis result for SHA-256 a52f86343b07a2c7…

MALICIOUS

PDF

45.1 KB Created: 2020-08-27 15:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a8530b6831fc4928af02fc0cad38238 SHA-1: 5d7dd624d7e673d5b57c2e6ed06cacb78a1b5e75 SHA-256: a52f86343b07a2c7f333a30ed5e7324c1635dc6df20c0c24516c8b8f84f66920
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes the same URL, suggesting a lure to a malicious site. The presence of a link farm further indicates a malicious intent to distribute content or traffic to potentially harmful destinations.

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.me/pify?keyword=women%2527s+weight+lifting+routine+free+weights+at+home
    • http://dezus.springfieldfrontiers.org/uploads/1/3/1/1/131164250/boteja.pdf
    • http://wazekivej.seanhuttonmusic.com/uploads/1/3/1/4/131407668/bibemozaja.pdf
    • http://files.picsaacademy.com/uploads/1/3/1/3/131379873/fevobid_xigin_kotib_podotaneduduz.pdf
    • http://files.maximiliangoetz.com/uploads/1/3/0/8/130874238/tufesuleduzanaruwas.pdf
    • http://befafodo.tomandcath.com/uploads/1/3/1/4/131406286/7731121.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7437/files/tailoring_cutting_and_stitching_books.pdf
    • https://cdn.shopify.com/s/files/1/0438/3608/0288/files/ruwurob.pdf
    • https://cdn.shopify.com/s/files/1/0435/4280/6680/files/jukokugufozazadazokamena.pdf
    • https://cdn.shopify.com/s/files/1/0435/6754/6527/files/ocuklar_yazdrlabilir_kolay_ncil.pdf
    • https://cdn.shopify.com/s/files/1/0432/3832/6432/files/lightroom_2017_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/dulorefegisatosisobiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3094/5693/files/bixazewuba.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/kaufland_catalog_online.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000633b.bin
7c1f7b08af0e61653b9fecfc1e21e2bdc0da24a7ae15e434daf3948786204c4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633B 5200 bytes
font_01_sfnt_off000074d6.bin
499b2e792ceda545707ac7bb26098eae40b87a2c6f3b8dbd3ed7826bdd707d59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D6 10752 bytes
font_02_sfnt_off00009950.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9950 4324 bytes

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