Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84d7ea504e7e01f…

MALICIOUS

PDF

41.5 KB Created: 2020-07-10 20:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 482da7eb6893f2b3624ecf3475a14aa5 SHA-1: 60685d7d697a6ee9863b4ba064548a32a0da18f8 SHA-256: d84d7ea504e7e01fa13e12f3e7eb80af5c1bc64f0a5bc670d9cf31f0fc650d50
120 Risk Score

Malware Insights

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

This PDF document is designed as a lure, presenting itself as 'learning spanish worksheets for adults pdf'. It contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=learning+spanish+worksheets+for+adults+pdf'. This link redirects to further malicious infrastructure, indicating a phishing or malware distribution attempt. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to various external PDF files, likely to manipulate search engine results or distribute further malicious content.

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=learning+spanish+worksheets+for+adults+pdf
    • http://files.latitude436.com/uploads/1/3/0/8/130874122/9702373.pdf
    • http://files.butterflyposturalchair.com/uploads/1/3/1/4/131437291/bedututuwimed.pdf
    • http://files.countyparkfriends.org/uploads/1/3/0/8/130814279/zobisulit_selitiga_sojinotavom.pdf
    • http://files.acerecoverygroup.com/uploads/1/3/1/8/131871778/1374044.pdf
    • http://files.krwoodworkings.com/uploads/1/3/1/8/131871894/1591208.pdf
    • http://files.allspacesllc.com/uploads/1/3/1/6/131606674/zafavom.pdf
    • http://files.barrons-conferences.com/uploads/1/3/1/4/131409170/3066792.pdf
    • http://files.myboxedcatering.com/uploads/1/3/1/1/131163976/e40fd.pdf
    • http://files.victoriafullard.com/uploads/1/3/1/8/131856071/f6e4cc05e06eb.pdf
    • https://duvafugujo.files.wordpress.com/2020/07/77727081363.pdf
    • https://liropija.files.wordpress.com/2020/07/sivodivolivoxi.pdf
    • https://tatagozoxu.files.wordpress.com/2020/07/bepevukunujaba.pdf
    • https://xakisujufo.files.wordpress.com/2020/06/37946941027.pdf
    • https://junukomi.files.wordpress.com/2020/07/45800999681.pdf
    • https://derutosudimi.files.wordpress.com/2020/07/28615934754.pdf
    • https://wulatoweren.files.wordpress.com/2020/07/lidipe.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/xawipobixewogite.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mizamolapo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.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_off00006308.bin
e4700babf9340caae44a784e4d91e41d5baf8d25a35c59fd96e8a655abe4724a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6308 5284 bytes
font_01_sfnt_off00007506.bin
cbce0f2f2f8dede8b245a9e18b652ebda1561bba570f2814169ac4600cc080ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x7506 10588 bytes