Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c14127916ee94a…

MALICIOUS

PDF

46.3 KB Created: 2020-07-10 00:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45af77e63520d8feecadbb4e90c7fa88 SHA-1: 9ddc2e30313a8aaadbdd0325b648a5d5098e7597 SHA-256: d2c14127916ee94a4ffc3ce3d179eef411f85b0fa6ad000728b7a5655a825f9c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wb?keyword=oncocercosis%20caso%20clinico%20pdf', which is flagged as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external PDF links, suggesting a link farm or SEO manipulation tactic. The primary goal appears to be directing users to potentially harmful external content.

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=oncocercosis%20caso%20clinico%20pdf
    • http://files.hawaiirootsandbranches.com/uploads/1/3/1/4/131437161/koxipibogukaj_pifodokobaf.pdf
    • http://files.bytheslicegourmetdesserts.com/uploads/1/3/1/4/131438692/lenelede.pdf
    • http://files.armonkdance.com/uploads/1/3/1/4/131409333/xukebisina_tuvunutanaxel.pdf
    • http://files.madlyeclectic.com/uploads/1/3/1/4/131483253/nuwitoduku_xafozovininu_lekilirox_navagad.pdf
    • http://files.geraldinepilgrim.com/uploads/1/3/2/8/132815346/6780435.pdf
    • http://files.truthfulart.com/uploads/1/3/0/7/130740127/fuzivepojulegema.pdf
    • http://files.caseyharvilla.com/uploads/1/3/2/7/132712214/vevuzupakaki.pdf
    • http://files.viktoraskubaitis.com/uploads/1/3/2/7/132741571/tumemebazu_tudusoxe_jusepokofa_fekazalifoxikaj.pdf
    • https://kadawajoxezo.files.wordpress.com/2020/06/perogilawovukowawex.pdf
    • https://kerejib.files.wordpress.com/2020/07/13401227733.pdf
    • https://xirobeparaz.files.wordpress.com/2020/07/xesataluvure.pdf
    • https://magapabiv.files.wordpress.com/2020/07/21297499413.pdf
    • https://kavomigazera.files.wordpress.com/2020/07/47553391742.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977390730.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18813115042.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nisej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55742160690.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_off0000732b.bin
c92c32cabf1b9bef56a8e935e48372a5b61898922a9ce899a58fef246243d107
pdf-font-stream PDF embedded font (sfnt) at offset 0x732B 4884 bytes
font_01_sfnt_off000083c2.bin
a0b4a595763f041d4bf6b2dc603320746483806efd7e3799b9b9a2da2a391ecc
pdf-font-stream PDF embedded font (sfnt) at offset 0x83C2 12852 bytes