Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d901ba41874f3c…

MALICIOUS

PDF

45.6 KB Created: 2020-08-04 04:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a5973b2743597a03e5aba7a223883cf SHA-1: b849714e06f19f7918e133554d944cbd03851094 SHA-256: 56d901ba41874f3c0b25056c54e8ba0cf43a446dd483960fc2ca81ef657ba6c5
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary malicious URL identified is https://ttraff.ru/pify?keyword=waste+management+system+pdf. The document body, though heavily obfuscated, contains this URL and references to other PDFs hosted on Shopify. The file's purpose appears to be to funnel users through a series of redirects, likely leading to further malicious content or exploits.

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.ru/pify?keyword=waste+management+system+pdf
    • http://vofufi.hirotosinmalawi.com/uploads/1/3/0/9/130968921/98ea74.pdf
    • http://files.helpoverhurdles.com/uploads/1/3/0/7/130738524/mulufuzopi.pdf
    • http://files.megs-eggs.com/uploads/1/3/1/3/131380901/wetenisupo-wakoxejixelo.pdf
    • http://files.rimrockmanagement.biz/uploads/1/3/1/4/131482975/zazatipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0250/files/91082221040.pdf
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/poxesisopotunezamikexiba.pdf
    • https://cdn.shopify.com/s/files/1/0436/0906/3586/files/jewemopeteludujuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2023/files/satevosakodez.pdf
    • https://cdn.shopify.com/s/files/1/0438/1533/8144/files/wibojupamaperefoda.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63491738983.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/30852988421.pdf
    • https://cdn.shopify.com/s/files/1/0434/0134/7226/files/wuzilanixujeminuremo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/81194745586.pdf
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/7326562788.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/94341246301.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/58679073371.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_off000066c0.bin
cf5017ab2a9cbdaddc24b5ea5650a4df801f05f39aeb99dad03cbcdd82190961
pdf-font-stream PDF embedded font (sfnt) at offset 0x66C0 4980 bytes
font_01_sfnt_off000077a3.bin
b57d810fc25047aea670c8d71d84d2efa14f7c32a5f6fc279980e9f7272b3be0
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A3 10444 bytes
font_02_sfnt_off00009b41.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B41 4324 bytes