Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6457d78d4f357e…

MALICIOUS

PDF

48.3 KB Created: 2020-05-04 11:49:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b15b89e2413653eac7c1923ccb95cac9 SHA-1: 04df25c280fb66bfa737a70cc5ebe13cbada2e11 SHA-256: 8c6457d78d4f357e29ec31bdf1562435156eabc4c47eea8c3df4a5f1dc93b0d1
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. One of these links, http://christinafriedle.org/uploads/1/3/0/8/130814926/130814926.html#bluestacks+whatsapp+free++for+windows+10, is directly embedded in the document body. The presence of a visual download button lure and a QR code redirect lure further suggests a malicious intent to direct users to potentially harmful content or phishing pages.

Heuristics 5

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://christinafriedle.org/uploads/1/3/0/8/130814926/130814926.html#bluestacks+whatsapp+free++for+windows+10
    • http://markbarnettcarefunding.com/uploads/1/3/0/7/130739472/cb069e6d78.pdf
    • http://passoverexperience.net/uploads/1/3/0/3/130313411/tosigivimag.pdf
    • http://yourpowertothrive.net/uploads/1/3/0/6/130604218/7ec53f41ff98a7d.pdf
    • http://mcrcontract.com/uploads/1/3/0/9/130969046/bowegafe.pdf
    • http://lcamidwestsummit.info/uploads/1/3/0/4/130488304/f302524acc.pdf
    • http://gettsphotos.com/uploads/1/3/0/2/130287229/mejugamadu.pdf
    • http://meraki-kw.com/uploads/1/3/1/0/131071196/1913691.pdf
    • http://star-nrg.com/uploads/1/3/0/8/130813643/5277bc34444.pdf
    • http://35dollar-tickets.com/uploads/1/3/1/4/131407995/6559324.pdf
    • http://dumbjockanalytics.org/uploads/1/3/1/1/131164568/laxokumeb.pdf
    • http://harvestoflovecog.org/uploads/1/3/0/5/130539247/gamoxuwurupugi_xovet.pdf
    • http://warriorworksllc.com/uploads/1/3/0/5/130539734/8288801.pdf
    • http://authornathanparks.com/uploads/1/3/0/6/130604767/a4bb2d6c355969.pdf
    • http://assuredpartnerslife.com/uploads/1/3/0/8/130814328/jodosokuwirused.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e4e.bin
df9c4c3d314208e05ff8ca21ba0cd32ba562c2cb42ba2a9490d49f8b6d4406f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4E 11952 bytes

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