Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1a5e800dcd58b5…

MALICIOUS

PDF

46.4 KB Created: 2020-08-15 08:43:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2a444f348c0ffc92fa76be06e634d5f SHA-1: 488370db20be1c0334dd67d3651b5e45b996c580 SHA-256: ed1a5e800dcd58b53b091d20c4478d57665c1d7ddfe0288ec01c4ad4ee4d629c
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=boomerang+expense+reporting+application'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, some hosted on Shopify. The document body contains urgency-related language, though it is heavily obfuscated and contains embedded URLs. The primary attack vector appears to be social engineering via a deceptive link, leading to potentially malicious content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=boomerang+expense+reporting+application
    • http://gefib.caribbeanmemoryproject.com/uploads/1/3/1/4/131407406/xunenegamizoge.pdf
    • http://lolurogi.redheadsweets.com/uploads/1/3/1/3/131383664/dototazewi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/planar_handbook_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/measure_integral_probability.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/clasificacion_de_bosniak_para_quistes_renales.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/72169683988.pdf
    • https://cdn.shopify.com/s/files/1/0429/3709/0211/files/17432323882.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/weluj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/buvoxibodumibaziba.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/zinagexaxofitobin.pdf
    • https://cdn.shopify.com/s/files/1/0433/9043/5495/files/8298444025.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/gesoxigademekiropur.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_off000060f3.bin
4bfecd70c385db8c704be6623a7943aa72b3cc3329408fd8323896c44ab777e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x60F3 5368 bytes
font_01_sfnt_off0000731c.bin
d7224ab10a66675c47c5dfbbd3b76069a75706be92c054b61a9953938262c373
pdf-font-stream PDF embedded font (sfnt) at offset 0x731C 10580 bytes
font_02_sfnt_off0000978c.bin
6327ed37ecd0372ec6923ce11bba3475d9a4a1aca566246fd9203611d374bccb
pdf-font-stream PDF embedded font (sfnt) at offset 0x978C 16124 bytes