Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c4149ddd70ed23…

MALICIOUS

PDF

42.1 KB Created: 2020-08-21 01:26:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a871007666c31db3fb317c2e8aad7ae SHA-1: eee399abb004c09722d9f95185ed23aa1eb83e97 SHA-256: 57c4149ddd70ed235647bd5ea248e6cf359459171416a30cd70252200cf031bd
160 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body also contains text referencing 'Chimera tool crack 2019' and a URL pointing to this redirector. The presence of a password-protected archive lure suggests the PDF is a delivery mechanism for a subsequent payload, likely obtained via the malicious link.

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.
  • 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
  • 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.ru/pify?keyword=chimera+tool+crack+2019
    • http://nudub.upstudiobklyn.com/uploads/1/3/1/8/131871991/xilizus-tadotage.pdf
    • http://files.ferrumforge.com/uploads/1/3/0/7/130776558/susutejatiga-dokutave-jabomajabun.pdf
    • http://files.digginthenew.com/uploads/1/3/1/0/131071166/wixirofufapimudi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2811/7661/files/free_aptitude_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/78846231090.pdf
    • https://cdn.shopify.com/s/files/1/0431/9553/1424/files/82292645157.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/vababoparaneba.pdf
    • https://cdn.shopify.com/s/files/1/0437/5583/1445/files/tutorial_tablas_dinamicas_excel_2020.pdf
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/adding_and_subtracting_negative_fractions_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/carmilla_castellano.pdf
    • https://cdn.shopify.com/s/files/1/0432/1447/1330/files/portuguese_language_to_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/77836808810.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/toshiba_external_hard_drives_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0435/4739/4199/files/android_one_mi_a2_specification.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/rich_dad_s_guide_to_investing.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_off00006625.bin
d69732fc685ce082395a9c8622803698388c1f96bda9ff473fde66376b9f1cb2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6625 5312 bytes
font_01_sfnt_off00007812.bin
cc6119367c0a4cb067ca0d456fda643dc0312e301030e3b92d71ac33ab373349
pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 10460 bytes