Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e5810fcca05c16…

MALICIOUS

PDF

38.8 KB Created: 2020-09-14 05:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57461385531c168725f9b59b83ef9545 SHA-1: 14266a617c5b2859e95fa21ee4b34f07d26fb381 SHA-256: b7e5810fcca05c165811f42c3f40cc5044ce32f0bed65cfdd5525666b1c8a77a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or redirection attempt. The document body includes a deceptive title 'Es imbox o inbox en facebook' which, combined with the embedded malicious URLs, suggests a social media account compromise lure. The primary malicious URL is https://ttraff.link/wix?keyword=es+imbox+o+inbox+en+facebook, which likely leads to 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.link/wix?keyword=es+imbox+o+inbox+en+facebook
    • http://fineza.bdmchallenge.com/uploads/1/3/1/8/131856456/soboke-sanopototidu.pdf
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdf
    • http://devezuvob.bargeattitanic.com/uploads/1/3/0/8/130874067/904694.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_70d1b849de9c43738625b717941d51c1.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/kokewovobibuwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/22708988786.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4344/files/92188649490.pdf
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/popabevuduxovikipena.pdf
    • https://static.usrfiles.com/ugd/ef253e_3561050c64c9402ba43f24f74c80b95f.pdf
    • https://static.usrfiles.com/ugd/017c44_20c4345a696540c1aed4fb0f96b1bf51.pdf
    • https://static.usrfiles.com/ugd/bfd504_f817d97d28df4280b7921c3b851910d6.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_off00005a89.bin
1ad5097f38e60b2b3b41abc730efcd991ab29a53b79053d97888bb20c535e6f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A89 5128 bytes
font_01_sfnt_off00006bfc.bin
d8a5bf22c052262fdfe24e3f445de535985e0768106668075096bdeffddf1eef
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFC 10156 bytes