Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa7649bcbd9ac56…

MALICIOUS

PDF

40.8 KB Created: 2020-08-18 19:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9556d8e0dde32729de6f4e9c3eb75c10 SHA-1: ab7c5870387f36c1c75b911749941a9d24fc1207 SHA-256: faa7649bcbd9ac56c52da4afef7e99625e3b147fa357b59a917d42aa1c1f9263
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to manipulate search engine results, leading to a malicious redirector. The document body, though heavily obfuscated, contains text related to a "Bedsheet warehouse sale 2019" and the malicious URL. The primary heuristic indicates the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=bedsheet+warehouse+sale+2019`, which is likely used to deliver a secondary payload.

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.com/pify?keyword=bedsheet+warehouse+sale+2019
    • http://lezoted.ianjkeddie.com/uploads/1/3/1/4/131483547/cddffbcf366aa0.pdf
    • http://files.3smallplatescatering.com/uploads/1/3/2/8/132815367/5254c.pdf
    • http://files.frontrangebehavioralassociates.com/uploads/1/3/1/0/131070688/maledekodi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/guideposts_trust_independent_living_centre.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/bses_rajdhani_bill_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/82789498528.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/burn_notice_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/31829621956.pdf
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/squad_fire_photos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2629/2629/files/linux_mint_bootable_usb.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_off0000502a.bin
1d36193e41e814bf248761fd671b7e9baf62713e284f7e43fa3a68313e929bcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x502A 5536 bytes
font_01_sfnt_off00006307.bin
457ccf0d040be91ef71a9cf8adf158d3e7add26ed174d7142351950e4c3f4cfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6307 4352 bytes
font_02_sfnt_off00007359.bin
000a4faf10346a96a57478cfb4cff25e97462628877dd82269c8cd0877132521		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7359 10260 bytes

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