Malicious PDF — malware analysis report

Static analysis result for SHA-256 9882c56a3b2600db…

MALICIOUS

PDF

41.4 KB Created: 2020-08-16 23:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bc9fc19c296a21999e75fd52dd75b8a SHA-1: 7ea6354918ba7d6fbcd22b58966d77e06161b093 SHA-256: 9882c56a3b2600db08c7686c8c9be64188fd602a88868b9a2feec91fd819f198
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains text fragments and URLs related to software downloads, suggesting a lure. The presence of a 'Password-protected archive handoff' heuristic indicates a common tactic to bypass security scanning by requiring a password for an archive, which is likely provided indirectly through the link. The primary malicious URL is https://ttraff.com/pify?keyword=powerarchiver+free++windows+7.

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.com/pify?keyword=powerarchiver+free++windows+7
    • http://files.nigeriandwarfcolors.com/uploads/1/3/1/4/131438202/rixofeguranukup_xofezirox_gofiketet_rarepijo.pdf
    • http://files.sjutsscience.com/uploads/1/3/1/4/131408528/gogosovunejipuke.pdf
    • http://tasin.lyndacward.com/uploads/1/3/1/6/131606027/6415704.pdf
    • https://cdn.shopify.com/s/files/1/0433/8375/0814/files/69594416232.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3412/files/the_cognitive_benefits_of_being_bilingual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/8353593858.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7814/files/viposajobonud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevola.pdf
    • https://cdn.shopify.com/s/files/1/0440/7505/7302/files/lista_de_habilidades_de_afrontamiento.pdf
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/virekekodelojunot.pdf
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/bengali_alphabet_chart.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/43875886280.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/45153739098.pdf
    • https://cdn.shopify.com/s/files/1/0439/5266/8830/files/kegokob.pdf
    • https://cdn.shopify.com/s/files/1/0440/8125/0469/files/cambridge_igcse_biology_past_papers.pdf
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/dalenuwanexerixulavesidix.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_off000062df.bin
d1fea9199afa48221de8f2c84bf074945910849af1d84b1ed6125b1287ab4f88
pdf-font-stream PDF embedded font (sfnt) at offset 0x62DF 5312 bytes
font_01_sfnt_off00007507.bin
0629274810a8daa4043448ef76fe8a438b28c233f97998ef2a393a21055267f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7507 10576 bytes