Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4c04e396fb2baf8…

MALICIOUS

PDF

46.6 KB Created: 2020-08-02 20:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b90e7a9448f093b4e7a472928675173d SHA-1: 1f783d72c11f26c3bf41ae2b44fe738d8e1f674a SHA-256: d4c04e396fb2baf814293370fd67d8b9ca7f5f9773753151e11c0dd7237faa5c
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=php+test+mysql+connection, which is likely used to redirect users to further malicious content. The document body contains obfuscated text and numerous embedded URLs, supporting the link farm and redirection attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

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/pify?keyword=php+test+mysql+connection
    • http://files.pegasusclinics.com/uploads/1/3/0/8/130814101/rapigesugerujo.pdf
    • http://files.dewaalrautenbach.com/uploads/1/3/1/3/131383604/sizuxokebitom.pdf
    • http://files.brushstrokelife.com/uploads/1/3/1/3/131382808/668080.pdf
    • http://files.fidalgovets.com/uploads/1/3/1/0/131070375/zidasupibajudak.pdf
    • https://cdn.shopify.com/s/files/1/0433/5520/9886/files/valkyrie_riders_cruiser_club.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/mofagogegusa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/minecraft_pe_block_hunt_server.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/bukafadoliw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/67216439866.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/54885810661.pdf
    • https://cdn.shopify.com/s/files/1/0435/3412/3160/files/56162432127.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/userprofilemasthead._masthead-_info._tag.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/96917686435.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/23373477429.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_off00006c8f.bin
3021e4d980844fa01c3c480bd6f074168eb54a46579893df39246728f8ea058a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8F 4884 bytes
font_01_sfnt_off00007d0b.bin
50b87af2db811cb759e2d1b251b601696f8354d3c0c67b0d7cf9eae4c4317685
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0B 10084 bytes
font_02_sfnt_off00009f8e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F8E 4324 bytes