Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ac25edf65d220c…

MALICIOUS

PDF

44.8 KB Created: 2020-07-09 05:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 058f9933fa3d0d232c362be7e2f1f8a3 SHA-1: 7afe3f29eaafe7b051fd10cedcf29ecda80eb711 SHA-256: c7ac25edf65d220cd521d17ad0f84546764748012b2775d3a985c39decd045fb
150 Risk Score

Malware Insights

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

The PDF document was flagged as malicious due to the presence of numerous embedded links, including one pointing to a known malicious redirector. The document body contains text related to 'positive parenting pdf' and includes a URL that appears to be part of a link farm designed to manipulate search engine results or redirect users to malicious content. The extensive use of external links suggests an attempt to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wb?keyword=positive%20parenting%20pdf
    • http://files.amandabechtelart.com/uploads/1/3/1/3/131379252/xinajarusuxerod.pdf
    • http://files.brightstonefarm.com/uploads/1/3/0/7/130775902/judebajesuwa.pdf
    • http://files.linkyscloset.com/uploads/1/3/0/7/130738708/sobif.pdf
    • http://files.loveandmercyfdc.com/uploads/1/3/1/8/131857071/tazowirujuvimi.pdf
    • http://files.stmarksbuderim.com/uploads/1/3/1/8/131856877/wapejax-jekorora-litaribebetur.pdf
    • http://files.retrovideogamez.com/uploads/1/3/0/8/130814529/e7db9f2046fc5.pdf
    • http://files.housing1student.org/uploads/1/3/2/8/132814967/kebivixifo_tetov_ledofar_rosiwuwesudobil.pdf
    • http://files.marinegibert.net/uploads/1/3/1/3/131380953/7630616.pdf
    • https://baxejubox.files.wordpress.com/2020/07/jijepogu.pdf
    • https://ruxejetufe.files.wordpress.com/2020/06/pejux.pdf
    • https://ruzilaboxit207333654.files.wordpress.com/2020/06/87550312987.pdf
    • https://bomubes.files.wordpress.com/2020/07/sepatuzexabavije.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44240048578.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000725b.bin
66960ced90ed5b3a96bacd015f04f508cc2413fdd513bf8f873e31796bbc38ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x725B 5028 bytes
font_01_sfnt_off00008389.bin
7873e05e4d35fd937d4bc9606b2443ea3499fddb6c1214771d2abc6587fe3c6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8389 10216 bytes