Malicious PDF — malware analysis report

Static analysis result for SHA-256 c65672d768bc644b…

MALICIOUS

PDF

54.4 KB Created: 2020-08-25 00:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81e82197d308052585300c89a3731a44 SHA-1: 01d30d6908eb0e8961b8d978ca2ff698c6f3bb4e SHA-256: c65672d768bc644b0fd5257b451ec3ef636b1bd70188d4998ef03554b67a5a24
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, disguised as a datasheet, redirects to a known malicious redirector. The PDF itself contains garbled text but the presence of the malicious redirector and the link farm strongly suggest a phishing or malware delivery attempt. No scripts were extracted from this sample.

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=irf3205+transistor+datasheet+pdf
    • http://dopagu.norighttokill.org/uploads/1/3/0/8/130815026/6ced4a.pdf
    • http://files.jolynneharenza.com/uploads/1/3/0/7/130738993/a3bb8e50b8d86f.pdf
    • http://files.veritas-society.org/uploads/1/3/2/8/132814791/nokadopafivoma_bolun.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/vimawovazakizuwokisile.pdf
    • https://cdn.shopify.com/s/files/1/0432/3229/7124/files/balam_pichkari_mare_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/faxoxexazepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4690/3709/files/toruzofegeboviwekisado.pdf
    • https://cdn.shopify.com/s/files/1/0440/9019/6133/files/sapna_choudhary_dj_song_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/31884593244.pdf
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/roger_walker_clinical_pharmacy_and_therapeutics.pdf
    • https://cdn.shopify.com/s/files/1/0430/9752/2329/files/18320135198.pdf
    • https://cdn.shopify.com/s/files/1/0434/0855/6182/files/capacitores_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0559/files/paluse.pdf
    • https://cdn.shopify.com/s/files/1/0465/2515/3430/files/nepezikodukirulovumi.pdf
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/xuwukorowupad.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_off00007635.bin
b45493489087ad8b974ed8724978359dfe16361aa566e9df3a431c7d147f801a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7635 4164 bytes
font_01_sfnt_off000084fe.bin
4b89b5e6b022fc31c2324b2335570d2a9d09a10b37dd1ea90d6d1a9cdd8c59ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84FE 5596 bytes
font_02_sfnt_off000097ed.bin
4a4ccd3064b4da70bd67ac0413373683aeab1bf8fe0b43da02fbe81318369caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97ED 16348 bytes

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