Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c87ed98452df11…

MALICIOUS

PDF

46.4 KB Created: 2020-09-21 03:08:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01560e84c8804210df4eab1397b6f397 SHA-1: d2929a5b92faedf444cedfc9990665b8b27feb5d SHA-256: f3c87ed98452df11b0f61fe96025e2a56adfafa55778130b98222ea8df35a1ae
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign content but likely serving as a distraction or to inflate SEO. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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.me/wix?keyword=whatsapp+web+apk+download+for+android
    • http://petuti.mayfieldwoodsorchestra.com/uploads/1/3/1/8/131856072/5882853.pdf
    • http://files.alexsalvi.com/uploads/1/3/2/6/132696155/wapowejigixa_wunam_barukukapoz_feririwutip.pdf
    • http://gomelejir.optimizedcompounds.com/uploads/1/3/1/4/131453526/zusuxowasu-pedowunitusaget-lefik.pdf
    • http://teraxotu.thetrevortrophy.com/uploads/1/3/0/8/130814328/fuwobujava.pdf
    • http://files.wgdairysupply.com/uploads/1/3/2/6/132682790/da19b125d14a9.pdf
    • http://xinikero.sandiegobromeliadsociety.org/uploads/1/3/0/7/130776854/8264724.pdf
    • http://files.imsmath.com/uploads/1/3/1/3/131381679/futefebikelop_kapenakeb_jaxadike_fufabo.pdf
    • http://files.jodiemarvincreations.com/uploads/1/3/0/9/130969418/pemaluw.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/epson_xp_340_manual.pdf
    • https://cdn.shopify.com/s/files/1/0457/7699/4470/files/5823516084.pdf
    • https://cdn.shopify.com/s/files/1/0437/4990/0439/files/forex_technical_analysis_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/3897/2831/files/administrao_financeira_e_oramentria_hoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/climate_graph_analysis_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/89588317349.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/labeled_skeleton_diagram_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/raderofofezonibozufatu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9168/1699/files/text_emoji_faces.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/
    • https://cdn.shopify.com/s/files/1/0429/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068e4.bin
87d75dae80691b66f7326422d164d0f2c350f3be73880f23c4dba4a5ea79c2e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E4 5224 bytes
font_01_sfnt_off00007aa7.bin
58fcc20040b7e45972456f0160bd0abccd6783163719fdb5e08d3132524bff25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA7 10436 bytes
font_02_sfnt_off00009e4f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E4F 4324 bytes

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