Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b75c1f557810c1d…

MALICIOUS

PDF

53.6 KB Created: 2020-03-15 11:26:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: dad26c30717996355f00fc2b93eae01b SHA-1: fb37e39af0306ab1c513a64e901402f016ba2e04 SHA-256: 3b75c1f557810c1deb58c5f1b96103efde0a86ef45a4abb4719883b12940c70a
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDF files hosted on unrelated domains, suggesting a link farm or SEO poisoning tactic. One heuristic specifically identified a 'Password-protected archive handoff' lure, indicating the document likely provides a password and directs the user to download an encrypted archive. This is a common technique to evade gateway security by hiding malicious content within a password-protected file. The presence of numerous external URLs and the password lure strongly suggest a malicious intent to deliver a payload.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://74-123-72-89.mgwnet.com/uploads/1/3/0/9/130969011/130969011.html#adobe+animate+cc+2017+bagas31
    • http://e1church.com/uploads/1/3/0/5/130543148/sewak-zobaratiwaxes-latizuluf.pdf
    • http://www.womenonpar.com/uploads/1/3/0/6/130620366/fedojavorujadedeka.pdf
    • http://skidayz.co/uploads/1/3/0/3/130313005/kosivopagimasowet.pdf
    • http://ns2.onlineloan-payday.org/uploads/1/3/0/6/130639155/zuduxujeloniduk.pdf
    • http://collegewritingsupport.com/uploads/1/3/0/5/130541023/7857983.pdf
    • http://74-123-72-18.mgwnet.com/uploads/1/3/0/8/130814172/jowemidumadi-kanepevelikiz.pdf
    • http://tenzon.org/uploads/1/3/0/6/130621444/f9a8661c.pdf
    • http://botmidasteam.com/uploads/1/3/0/7/130775025/gilat.pdf
    • http://www.lanzaroteboatexcursions.com/uploads/1/3/1/0/131070574/dekar.pdf
    • http://wikademia.org/uploads/1/3/0/6/130621215/9139471.pdf
    • http://jiaxuanzhang.org/uploads/1/3/0/3/130312919/6267698.pdf
    • http://glamodo.org/uploads/1/3/0/4/130479171/mezafojatokelox.pdf
    • http://northtexasstrings.com/uploads/1/3/0/4/130488345/duvebinabetegabilu.pdf
    • http://reboundat.com/uploads/1/3/0/7/130738720/7fcd2b.pdf
    • http://expressrelocators.com/uploads/1/3/0/8/130814782/bfce416.pdf
    • http://www.livingbylucy.com/uploads/1/3/0/4/130483114/pudusexekatolug-toras-fefagixasox.pdf
    • http://www.kenmcknight.com/uploads/1/3/0/3/130313178/tizabifuda.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_off00007ee6.bin
b41e331ff0ab228f0b29f3a56ee4923969c0f9b08c25ecf818f1af1b8fe2831b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE6 8072 bytes
font_01_sfnt_off00009e31.bin
158bba28c689c5a65a90bb407284eec9802fe203910a1cac654b20ea7a3ae50f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E31 6540 bytes
font_02_sfnt_off0000b368.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0xB368 16036 bytes