Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d1b19c22468791…

MALICIOUS

PDF

45.6 KB Created: 2020-03-12 07:07:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 70a49cb56b219720ffc491f0901a423c SHA-1: aa594666bf21e210533d623644b63391a18d7d7c SHA-256: a4d1b19c2246879106748ce4930fd9d09200ca28cebfb68903cde987bf155bac
130 Risk Score

Malware Insights

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

The PDF document contains lures related to payment agreements and redirection, as indicated by the 'SE_PAYMENT_REDIRECT_LURE' and 'SE_INVOICE_LURE' heuristics. It embeds numerous external links, with one pointing to a specific online payment agreement page. The presence of a large number of external PDF links suggests a link farm designed to host malicious content or redirect users to phishing sites. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://host54.carmichaelnl.com/uploads/1/3/0/5/130589415/130589415.html#form+9465+online+payment+agreement
    • http://mtnathletics.com/uploads/1/3/0/8/130813366/5785473.pdf
    • http://visitsnowshoemountain.com/uploads/1/3/0/8/130813782/fimalugip-nelujikovujoz-wipukefan.pdf
    • http://envt225malta2019.com/uploads/1/3/0/7/130775173/be8770fc.pdf
    • http://www.villamelpomeni.com/uploads/1/3/0/5/130550712/fudamesoxu.pdf
    • http://sunnystats.com/uploads/1/3/0/5/130540493/1209174.pdf
    • http://www.procdm.nl/uploads/1/3/0/5/130540609/rujupadik-fadulonomox-wegalekod.pdf
    • http://paperbirchyoga.com/uploads/1/3/0/6/130640003/c3b7c269f90.pdf
    • http://atouchtakingwomanhigher.com/uploads/1/3/0/3/130313376/7424007.pdf
    • http://www.lavalashes.net/uploads/1/3/0/3/130313186/xupelapez_pakatopeniza_xodibijakak_savaj.pdf
    • http://freezebreezemechanicals.com/uploads/1/3/0/5/130589214/manijonulegava-vikoxijuwone-takegatijudem.pdf
    • http://j4strings.com/uploads/1/3/0/4/130483817/8533899.pdf
    • http://webdisk.jamesross.com.au/uploads/1/3/0/7/130739928/9660877.pdf
    • http://nancyjmiller.net/uploads/1/3/0/6/130605374/doludis.pdf
    • http://czytelnia.jezus.pl/uploads/1/3/0/6/130620833/1813700.pdf
    • http://nickyarthur.com.au/uploads/1/3/0/4/130483745/pepigosepazowifelowe.pdf
    • http://stat360design.com/uploads/1/3/0/7/130739772/4622705b7.pdf
    • http://www.redmacx.com/uploads/1/3/0/4/130435820/6623075.pdf
    • http://darcyrylander.com/uploads/1/3/0/4/130476024/zodojefak_narol_pimojuzebatag.pdf
    • http://jballsy.com/uploads/1/3/0/5/130538869/4550378.pdf
    • http://liableconstruction.com/uploads/1/3/0/2/130271154/e82c8caf820ef.pdf
    • http://sarotr.online/uploads/1/3/0/6/130604791/6952927.pdf
    • http://peristeri-guide.com/uploads/1/3/0/5/130550712/46a5522cf.pdf
    • http://juansosairrigation.net/uploads/1/3/0/3/130379696/tizemoseridesixunef.pdf
    • http://solardasmares.com/uploads/1/3/0/2/130274338/622b6637.pdf
    • http://solardasmares.com/upload
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076c0.bin
d7de68d95d93f5addb7f0e6daae080ad60ab7510bedbf4fb06fdddec1811a158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C0 7340 bytes
font_01_sfnt_off00009387.bin
319f9c996375511bbe969d0b76506a2162f7d522988cd2631b41a5a1e417b94d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9387 16040 bytes

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