Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e5d8f04068b2e8…

MALICIOUS

PDF

48.7 KB Created: 2020-08-19 09:32:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 139ba7e34bea85e144bbcb26bc3a18c2 SHA-1: 011d3b9037de7305932bb897c643055ce1de5b24 SHA-256: 93e5d8f04068b2e866ba6012e3ab21f391f8b7bd1f2ae8bdada46e1a86d07c9d
128 Risk Score

Malware Insights

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

The PDF file contains a prominent link that appears to be a download lure for a game mod. This link redirects to `ttraff.com`, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text and the malicious URL. The PDF also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation or to obscure the primary malicious redirector.

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.com/pify?keyword=angry+birds+classic+mod+apk+rexdl
    • http://files.sanctuaryofpraise.net/uploads/1/3/2/6/132682235/3970809.pdf
    • http://saxefen.polarclad.com.au/uploads/1/3/2/6/132681504/zirifuzu-tinibet-wiruzobat-tezodiji.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/negefesapevedumar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6548/3172/files/psp_on_vista.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/71796323673.pdf
    • https://cdn.shopify.com/s/files/1/0434/2192/5525/files/apprendre_le_russe_pour_dbutant.pdf
    • https://cdn.shopify.com/s/files/1/0428/5726/7359/files/69652323060.pdf
    • https://cdn.shopify.com/s/files/1/0428/4180/0860/files/pastest_mrcs_question_bank.pdf
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/al_almohadon_de_plumas.pdf
    • https://cdn.shopify.com/s/files/1/0428/2066/5510/files/40131391878.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/risufugozozemebetiguxit.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/nanawo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/32945912091.pdf
    • https://cdn.shopify.com/s/files/1/0452/9104/5026/files/html_to_php_using_header.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_off000067eb.bin
fad47a2ebd4e3d8f594fed75bf58405f04df85c41dfd2747bcabe30d8327b9ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x67EB 5756 bytes
font_01_sfnt_off00007b6b.bin
158ec830afe37c20a4c029a3a6051f90a7cdabb46ccd27d2ebc1654985bcc245
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6B 10624 bytes
font_02_sfnt_off0000a01f.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
pdf-font-stream PDF embedded font (sfnt) at offset 0xA01F 16204 bytes