Malicious PDF — malware analysis report

Static analysis result for SHA-256 e711fb8557f0d204…

MALICIOUS

PDF

39.0 KB Created: 2020-08-14 11:40:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ff43fda0483f0187e43a51f1a99dd79 SHA-1: e84be554b8d3b6e1185c767aeb03ab7f49ebb253 SHA-256: e711fb8557f0d204c5356c3f4c3fec5d0b4ea72c3febab620246881e3857fe8b
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO abuse tactic. The presence of a 'download button' lure further supports a malicious intent to redirect the user to malicious infrastructure.

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=cymera+terbaru+apk
    • http://files.jupitermoonjewellery.com/uploads/1/3/0/9/130969818/vuninuwuxubekag_tereveferifosem.pdf
    • http://witasatu.sportzlifeone.com/uploads/1/3/0/8/130814124/lalurikidenepa.pdf
    • http://files.psichicpp.com/uploads/1/3/1/8/131871585/vinazuxuje.pdf
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/life_history_of_aggression_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/vuzinujawufitavuzuve.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/amoral_familism.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/larabobed.pdf
    • https://cdn.shopify.com/s/files/1/0438/2723/2918/files/ravigejalox.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/mumulusuwipeki.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/91977649182.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/wofamufegoxodorufus.pdf
    • https://cdn.shopify.com/s/files/1/0433/4167/6694/files/webet.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/scrambled_sentences_exercises_for_beginners.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_off00005d17.bin
e3cb951a07101c537f03373046aed8afc6407b28d84b82cb390a7080f89fa461		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D17 4968 bytes
font_01_sfnt_off00006de5.bin
8b978b148c5bfa82e8325f42948af162d508c8a951c921411ccf655078a5c443		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE5 9812 bytes

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