Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa351c8d1840d2a0…

MALICIOUS

PDF

48.5 KB Created: 2020-08-28 13:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99230955e422e59d89a24b2554ef8439 SHA-1: e5385297b6162daf6fdf777420961338ff1b9658 SHA-256: fa351c8d1840d2a0b4f7c46e1ac5f3c24bf32dd116e1e3cc34044f0cc1cf8a21
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=yamaha+rx+v385+review', suggesting an attempt to direct users to malicious sites. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the attack pattern of a link farm designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=yamaha+rx+v385+review
    • http://najepak.cainedelup.com/uploads/1/3/1/3/131380213/5a5bca.pdf
    • http://mexonoxi.tripwithchris.com/uploads/1/3/0/7/130738936/5820455.pdf
    • http://pibalet.newglasgowmassage.ca/uploads/1/3/1/4/131408738/wefefunugivad.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/beginner_acting_resume_template_word.pdf
    • https://cdn.shopify.com/s/files/1/0432/2338/4219/files/learning_disabilities_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/pujuz.pdf
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/smokker_til_brnemalerier.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/71827191210.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/79679743420.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6207/files/xawadigexiwigodejopewizi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2644/6496/files/37370926368.pdf
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/66069617850.pdf
    • https://cdn.shopify.com/s/files/1/0464/7711/5544/files/centos_6._10_iso_32_bit.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_off00007ee1.bin
0f7e5696f425fd07b12e8a0b41a40f9f73409b2af0c3b40737b13aa01f660fcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 5380 bytes
font_01_sfnt_off0000911f.bin
a73c5b548c5113b3c76949e75c627506bd4665006ac78997ee0b0ab98768477b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x911F 10684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.