Malicious PDF — malware analysis report

Static analysis result for SHA-256 227724f6dd013588…

MALICIOUS

PDF

40.9 KB Created: 2020-08-15 02:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0b8b9799db10612abc3930b41698921 SHA-1: 81fbe419f159b86c061dc27a9fd9ee62cf590e74 SHA-256: 227724f6dd013588ddce87de0c39b4a38b603ded2f2407387881fc3d54503c23
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a high number of embedded links, many pointing to external resources, which is characteristic of a link farm or redirection scheme. One critical heuristic identified a link to a known malicious redirector, traff.cc, which is used to obscure the final destination. The document body also contains a call-to-action phrase, reinforcing the lure to click the malicious link. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=convert+kindle+to+pdf+mac+online
    • http://romuvebo.holdengreenphotography.com/uploads/1/3/1/4/131453870/65411.pdf
    • http://kanilom.chappellhillgardenclub.com/uploads/1/3/0/8/130874493/kumiwot.pdf
    • http://sewivavas.maison-lamartine.com/uploads/1/3/2/7/132712380/3c3ca4c4ff4c1.pdf
    • http://files.southcanterburytoday.com/uploads/1/3/0/7/130776619/zomobeseti_lajoloxeka.pdf
    • http://files.shopplumgifts.com/uploads/1/3/2/8/132814343/zamifagebevigaleg.pdf
    • https://cdn.shopify.com/s/files/1/0435/7819/6129/files/bukekakejapone.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/mujelivonuvumavevot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90142435821.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/lelorosofumizine.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/soforexatitelan.pdf
    • https://cdn.shopify.com/s/files/1/0434/2212/2151/files/nolewagedevarope.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13652925252.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84860081798.pdf
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/79096785723.pdf
    • https://cdn.shopify.com/s/files/1/0434/1291/4332/files/santa_elf_bowling_game_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/wing_chun_techniques.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_off000060e1.bin
d13adce64d10474a5fbf15bb49c44063e75621bfe615c7cf9a7bc98662a0c4c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 5152 bytes
font_01_sfnt_off00007256.bin
fc45e54c6fc0f558ced4010c4a8cc6be880b5f07aefb7d95fbc39914c8bb0e31
pdf-font-stream PDF embedded font (sfnt) at offset 0x7256 10592 bytes