Malicious PDF — malware analysis report

Static analysis result for SHA-256 37dd01d4227dc3be…

MALICIOUS

PDF

35.9 KB Created: 2020-07-14 08:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e364bf6c2becffe7bd9446d4213d53f SHA-1: 9d22659274f84e7f11cbb7cfe449b3eec652dd69 SHA-256: 37dd01d4227dc3bed7be5c01f15ff7492e751ba01735c6ec2fc8b92de3a9ef04
140 Risk Score

Malware Insights

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

This PDF file is designed as a phishing lure, presenting itself as a document but containing a malicious redirector link. The PDF_IMAGE_LURE heuristic indicates it's an image-only document with an action trigger, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms it points to known malicious infrastructure. The embedded URL https://ttraff.cc/wb?keyword=histologia%20ross%207ma%20edicion%20pdf%20descargar is the primary indicator of malicious intent, likely leading to further compromise.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 35 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/wb?keyword=histologia%20ross%207ma%20edicion%20pdf%20descargar
    • http://files.rooferselgin.com/uploads/1/3/0/7/130739510/86dbabe95977.pdf
    • http://files.absipartnership.org/uploads/1/3/2/8/132814552/lojajuvis.pdf
    • http://files.advancedanaerobics.com/uploads/1/3/0/9/130969555/davam.pdf
    • http://files.betterhealthyouthyoga.com/uploads/1/3/1/8/131856125/6165013.pdf
    • https://lebugojava.files.wordpress.com/2020/07/38803970307.pdf
    • https://nemejaranola.files.wordpress.com/2020/07/vinomiwonimipusukezivuse.pdf
    • https://foregemod.files.wordpress.com/2020/07/37793735616.pdf
    • https://mosufazu.files.wordpress.com/2020/06/87236440300.pdf
    • https://zexitisi.files.wordpress.com/2020/07/15539546161.pdf
    • https://tezivage.files.wordpress.com/2020/06/7248168688.pdf
    • https://gosetufan.files.wordpress.com/2020/07/36498773654.pdf
    • https://xuxosasi.files.wordpress.com/2020/06/duwubadanuremadus.pdf
    • https://pibofir.files.wordpress.com/2020/07/44344134440.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sekokejeninidifowabofu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/rumaxobovujebinogoro.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/86083662455.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botolewapaniwid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5447/files/vupagi.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_off00005586.bin
64dc99b3317845c55fef78f4df50003614e615d05f76eefb5b23da7fff17638b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5586 5304 bytes
font_01_sfnt_off00006776.bin
bd72dcbc8b2da5c344bea76dd513657fa968a6058a1069bfd241af2b993aae2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6776 7776 bytes