Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a43549c1bb06a1f…

MALICIOUS

PDF

54.5 KB Created: 2020-08-08 05:23:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8c5a76a9f1d141b824a70dab5241ac8 SHA-1: fc82c383eecd46a464795caab82c3856ba66ba66 SHA-256: 2a43549c1bb06a1fc965fd1b9504fd7e0fa3dfdc181f806f3cd59fcef0363b3f
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to benign content on Shopify, but one critical link directs to a known malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure for downloading further content. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site or download. No scripts were extracted from this sample.

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.cc/pify?keyword=bcs+question+bank+pdf+file+download
    • http://files.olgcid.org/uploads/1/3/0/7/130739210/redijedowa_sewana_buzekunatiz_xojufamozufub.pdf
    • http://files.mtzionucc.org/uploads/1/3/1/4/131437242/bc31c844eb.pdf
    • http://vopopoze.time2shinehypnotherapy.com/uploads/1/3/1/3/131379578/migirivate.pdf
    • https://cdn.shopify.com/s/files/1/0446/6681/4617/files/label_the_continents_and_oceans_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/d468_transistor.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/balozolusijaxuko.pdf
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/list_of_percussion_instruments_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vebamuwonodivori.pdf
    • https://cdn.shopify.com/s/files/1/0432/0054/4931/files/81754422399.pdf
    • https://cdn.shopify.com/s/files/1/0433/5016/3609/files/aladdin_full_movie_1992.pdf
    • https://cdn.shopify.com/s/files/1/0439/1154/4987/files/40766276670.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/zabume.pdf
    • https://cdn.shopify.com/s/files/1/0436/9943/7721/files/30830903525.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/nawawolukilorefupem.pdf
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/fazur.pdf
    • https://cdn.shopify.com/s/files/1/0432/3596/7143/files/27974410940.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_off0000663b.bin
7a0daf3ce293c362b1767de377acf804a99d2324addcc1392b5a6e6de51b517e
pdf-font-stream PDF embedded font (sfnt) at offset 0x663B 5524 bytes
font_01_sfnt_off0000792a.bin
b377f0c8b20f859e95340d901abdbee1201ec4cd0d70c0e45af0596431a999c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x792A 15928 bytes
font_02_sfnt_off0000a914.bin
8675869863274cdcce944b30e3faca3eed1ff0ad8b78701c7aa82df14b67805c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA914 10436 bytes