Malicious PDF — malware analysis report

Static analysis result for SHA-256 d065baad7403b1cb…

MALICIOUS

PDF

106.6 KB Created: 2020-11-02 18:25:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f945806f7b64aab29a0278642e6d2df SHA-1: 173e81d35a8b6957b5ec94a440e0d9027359b6a8 SHA-256: d065baad7403b1cb2a5e55dafef904c327b30b1e94ad591f0e535c95210eac31
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector, suggesting an attempt to lure the user into clicking it. This behavior is consistent with advance-fee scams or phishing attempts, aiming to deliver a second-stage payload or lead the user to a fraudulent site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/123?keyword=geometry+dash+noclip+apk+kindle
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f879fd300bcd.pdf
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/xafuxevavowuf_pilulutekine.pdf
    • https://cdn-cms.f-static.net/uploads/4389805/normal_5f9d2961484a1.pdf
    • https://fupuvoriru.weebly.com/uploads/1/3/4/4/134494751/zovenegizip-gomixemoru-kuzukuvuz.pdf
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/a9488.pdf
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/93a3639e03e77c9.pdf
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/1502835.pdf
    • https://keziripar.weebly.com/uploads/1/3/4/5/134522929/f47d1257.pdf
    • https://sapakokejepudig.weebly.com/uploads/1/3/4/4/134457578/sujiris.pdf
    • https://zipiluzus.weebly.com/uploads/1/3/4/2/134234939/8136793.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/289aa392-13e6-408e-815b-a8a837dd1b48/louange__toi_seigneur.pdf
    • https://uploads.strikinglycdn.com/files/2023907a-c6ab-4204-b7a1-43517154c358/55666738496.pdf
    • https://s3.amazonaws.com/fasanag/90870333753.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/
    • http://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00013472.bin
9c665941a91cd42be7c448a6ee94817f63c742fd976bc5fc71480fbf284aa78f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13472 14300 bytes
font_00_sfnt_off0000edee.bin
ad53b943ba0b9be1c5e124c58067c5b10d9a63d674e1228941752f0c72b0de77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEE 15840 bytes
font_01_sfnt_off000121e0.bin
4cd9e3f14476c6f0eefefb86c96d2110342529cca61f9079f3adebda0f791c15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121E0 5508 bytes
font_03_sfnt_off00015bf4.bin
2c2592e010a04431656d122cab03bd2d29ef17d615d6d460260c4630b538052c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BF4 13008 bytes
font_04_sfnt_off00018734.bin
3b57641f1999f6541c2d893b1e3d247a87d142f09832d59173638263c4a0d9a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18734 16100 bytes

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