Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c52c8ff9e7dcad7…

MALICIOUS

PDF

43.0 KB Created: 2020-08-29 02:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d8387a2b1e483d0b663aeee850dc78b SHA-1: 33266700e9b56879935ca4aa93b68af4ffbad780 SHA-256: 4c52c8ff9e7dcad765b505b01622630ec6e6cc635f67616dbc2e498c0d6a7ff0
128 Risk Score

Malware Insights

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

The PDF contains a lure for a game download, directing users to a link that is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, suggesting a broader campaign to distribute malicious content. The presence of a visual download button further supports the social engineering aspect of this attack.

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/wix?keyword=pokemon+psychic+adventures+rom+download
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/download_the_fast_and_the_furious_20.pdf
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/ripozifetediwifejuzu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4038/2882/files/sepiladubud.pdf
    • https://cdn.shopify.com/s/files/1/0448/6879/6578/files/global_agricultural_machinery_market.pdf
    • https://cdn.shopify.com/s/files/1/0451/6331/5349/files/bidirectional_lstm_crf_models_for_sequence_tagging.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3505/files/bad_time_simulator_sans_fight.pdf
    • https://cdn.shopify.com/s/files/1/0440/9645/4808/files/situgotu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/16404685824.pdf
    • https://cdn.shopify.com/s/files/1/0430/8316/9943/files/principles_of_virology_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/32683602077.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/29453580599.pdf
    • https://cdn.shopify.com/s/files/1/0438/3142/7234/files/modiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22945880436.pdf
    • https://cdn.shopify.com/s/files/1/0435/9441/6290/files/nationalist_movement_in_west_africa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/unified_remote_server.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/gawugimilonijutasoxegujab.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/52119133470.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_off000068a0.bin
90d4cf8d9c9bab896420aa2b7d432d3f3378ccb9c2fc753dfdf1d5e75a610323
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A0 5632 bytes
font_01_sfnt_off00007bac.bin
e6056732576cb26590be9d3982867a2e784b551d1a545c8ca19eed62d891b018
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAC 10364 bytes