Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76aff1b3e0d3c30…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 03:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e444f00b17d6e6b79f7ec8de07af0bcb SHA-1: 6bf306dcbaf0c87decaa8c05be5cff4a103581a0 SHA-256: d76aff1b3e0d3c3073654dae12614d57d8e14661a68c0a3bca169e78867f2f9a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to ttraff.ru, which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and a reference to a game, suggesting a lure. The presence of numerous PDF links and a call-to-action heuristic indicates a phishing or redirection attempt. No scripts were extracted, limiting the analysis of the payload.

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.ru/pify?keyword=game+bleach+vs+naruto+apk+android
    • http://lototiv.marysteinkedesign.com/uploads/1/3/0/7/130775478/jowonamiregobe.pdf
    • http://fozeg.thecottageatcedarburg.com/uploads/1/3/0/8/130813765/gakilakeb_kijejelaxil_lifegaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/didoxivuwelabefeberaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/marathi_kadambari_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/7001/9994/files/84797847018.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/allen_key_bolt_size_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/ssf2_v0._9b.pdf
    • https://cdn.shopify.com/s/files/1/0429/0671/4268/files/samsung_warranty_card.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/6065343116.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/que_es_cariotipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/sivekemonixusifuwoxofo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1140/files/lipelumikalibikesuvozako.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/experience_certificate_sample_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/fujovisaxidamofazokazux.pdf
    • https://cdn.shopify.com/s/files/1/0436/0100/2664/files/tamibedopopek.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_off00006a07.bin
24cb4ca5ca5b937bbf94c768f055a14a9c20a2e71a8891e2dadb075a3f0383e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A07 5608 bytes
font_01_sfnt_off00007cfb.bin
395d23ef1ea07e2c3ae47b4a3a2d02681db05dbc1f4642c306bd694889dff707
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFB 14160 bytes