Malicious PDF — malware analysis report

Static analysis result for SHA-256 38b8e15da7271d49…

MALICIOUS

PDF

50.6 KB Created: 2020-08-17 12:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89bbb45e37af30a6056e3db9d9e56231 SHA-1: e02f4633b4a1d45adb4297c434f6a7082f704867 SHA-256: 38b8e15da7271d491eb086c5cc428c502481a4c8f557e8ce95c43a9d9d86d1c9
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to an insurance proposal form and includes the malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination. The primary malicious URL is https://ttraff.cc/pify?keyword=apollo+munich+health+insurance+combo+proposal+form, which is likely used for phishing or malware distribution.

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=apollo+munich+health+insurance+combo+proposal+form
    • http://files.mayflowerimporters.com/uploads/1/3/1/4/131453919/c0088fe.pdf
    • http://files.kristibphotos.com/uploads/1/3/1/6/131607010/jamaweverulesosun.pdf
    • http://files.garnersoftware.com/uploads/1/3/1/4/131453206/7580303.pdf
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/canvas_draw_circles.pdf
    • https://cdn.shopify.com/s/files/1/0438/1235/6253/files/sea_ray_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9644/files/octonauts_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/vudosakedixotabu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/buddhist_books_sinhala.pdf
    • https://cdn.shopify.com/s/files/1/0432/4143/9400/files/62507445434.pdf
    • https://cdn.shopify.com/s/files/1/0455/4902/7493/files/public_finance_administration_noun.pdf
    • https://cdn.shopify.com/s/files/1/0438/9172/0347/files/42048804672.pdf
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/biluzubepesukabuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/financial_accounting_cycle.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/37459741925.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_off00007ad8.bin
fd6e556262791c3bb364a6a010522d7f25755335674b9caf48592daf140a62cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD8 5264 bytes
font_01_sfnt_off00008c7d.bin
00724868458101283b9c7200f6e3d7cb590c1d9b8d86da345f1f24633a981a12
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7D 10140 bytes
font_02_sfnt_off0000af2a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF2A 4324 bytes