Malicious PDF — malware analysis report

Static analysis result for SHA-256 da75ef2e0626281e…

MALICIOUS

PDF

41.3 KB Created: 2020-09-16 22:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51dba3499bec7b6759c9bb7227eee35a SHA-1: ae497334e28c074ee4c7b0228adee0f66aa65b8d SHA-256: da75ef2e0626281ecd305015a7e4da9d736a93c4a689bca40555b5297ce2fb01
128 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many pointing to domains associated with link farms and SEO manipulation. One critical heuristic identified a link to a known malicious redirector, suggesting an attempt to funnel users to malicious content. The presence of a "download" call-to-action further supports a lure-based attack pattern. No scripts were extracted, but the link farm and redirector heuristics strongly indicate a malicious intent to direct users to harmful sites.

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.ru/wix?keyword=inboxdollars+hack+apk+download
    • http://ranedug.keewahla.com/uploads/1/3/1/4/131407440/f4b91d5f.pdf
    • http://donowipe.amongmountains.com/uploads/1/3/0/9/130969352/7082156.pdf
    • http://files.lorenasantacruz.com/uploads/1/3/1/4/131407144/8c5301c5de1464.pdf
    • http://files.novahtrp.com/uploads/1/3/1/4/131437978/rosovenuwa.pdf
    • http://rurejase.fbcoflizton.com/uploads/1/3/2/8/132814930/riwof-fazevidepoduta-bisotajipimi-mozeg.pdf
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/pumati.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/9935628852.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/metroid_nes_tourian_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0433/9164/7894/files/jipenop.pdf
    • https://cdn.shopify.com/s/files/1/0429/1044/9820/files/93196317787.pdf
    • https://2bf37940-a350-42c8-a659-4aad8f1a295b.filesusr.com/ugd/50988c_d5e168186cb2482d9cf19a2882ed2f54.pdf?index=true
    • https://dc1eabe8-b70d-4b06-b7d1-fd0ec6fca573.filesusr.com/ugd/5b5da7_e94dd28e98f84862b7ba1268d4e57b45.pdf?index=true
    • https://53275f76-08b2-42f3-bb02-5b7f38d28344.filesusr.com/ugd/cf9ff1_969f84ad9d014742b10b24d387c883a7.pdf?index=true
    • https://a51c16f8-b10d-4d8b-98f1-446b67219a41.filesusr.com/ugd/b41a9a_3a279e41e54347258b1898f3799c3b44.pdf?index=true
    • https://0949b12d-41d8-4b1f-8b69-070fa6290c06.filesusr.com/ugd/6924eb_a056b32726de4d408c34e6ea25f448bc.pdf?index=true
    • https://156bf388-540e-45ba-95e7-7e3573f7540b.filesusr.com/ugd/d93890_169e9b84224c473c9e112abc4719ebcf.pdf?index=true
    • https://d1d6e7ca-daf9-4656-b2df-35dc97b8bed9.filesusr.com/ugd/55e2c6_9b3dcc8053f346629135881a23730c68.pdf?index=true
    • 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_off000060ec.bin
4552c81d474a84d5a0a23376294801d1bb276053ffe410de11b87209471d3acd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60EC 5464 bytes
font_01_sfnt_off00007387.bin
ff5307a400f477d8f7281ab763c9f20ddbb19be6405f4d860e34a8283c023127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7387 10760 bytes

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