Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a049912d4173d0f…

MALICIOUS

PDF

68.1 KB Created: 2020-08-17 17:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4241f303421129193552ed468a964965 SHA-1: e339607e045ff1c1cb83eac5931ffca20810e494 SHA-256: 1a049912d4173d0f55ecf3d26fa7eb7bcfb72c84f584d4d11ac61afdd032e70c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.001 PowerShell

The PDF contains a lure related to 'Camscanner apk news' and directs users to a malicious redirector URL. It also features a link farm of numerous other PDFs, likely to manipulate search engine results or distribute further malicious content. The presence of a password-protected archive lure suggests an attempt to bypass gateway security by encrypting the actual payload.

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=camscanner+apk+news
    • http://files.1ccauburn.org/uploads/1/3/0/7/130775490/tovibagu.pdf
    • http://files.victorytabernacle-franklin.org/uploads/1/3/1/4/131406841/3702887.pdf
    • http://koxafar.showroom-305.com/uploads/1/3/1/3/131398222/zosapin.pdf
    • http://fifedo.quinkydinkdonuts.com/uploads/1/3/1/0/131070450/xixuxulukumoj_fobosejuwafipu.pdf
    • http://files.retreatjourneys.com/uploads/1/3/1/0/131071258/sepugiwanomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8080/9625/files/list_of_diploma_engineering_colleges_in_mumbai.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/6545442894.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/renaissance_art.pdf
    • https://cdn.shopify.com/s/files/1/0438/3247/5810/files/rixixakodekezu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/fupujamadonusedijujobewol.pdf
    • https://cdn.shopify.com/s/files/1/0438/3608/0288/files/59889550286.pdf
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/afro_asian_literature_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0448/1482/7677/files/snake_game_python_code.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b59.bin
2b5f1d13c4e799420fbcfb15e5f0537ee888398f4bc89d3bd4afb79ed5ca5e1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B59 16096 bytes
font_01_sfnt_off0000bf3c.bin
87eb05f841049c7e60856e23f3a6387c87e03e94881400550a974353dad2d341
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF3C 5108 bytes
font_02_sfnt_off0000d08c.bin
a8ba320a0ac8a73a5a8cc2c47ba30bd151ec5f51af4d5ac0b9daf85eaa8f1301
pdf-font-stream PDF embedded font (sfnt) at offset 0xD08C 1936 bytes
font_03_sfnt_off0000d9d1.bin
d414844ec71305d5fea6d28c98ea7159b08faa31b3bf8018018a69748d0673e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D1 12320 bytes