Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f38faf65103074…

MALICIOUS

PDF

41.3 KB Created: 2020-10-02 14:01:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a67582a7133cd0b78ca72d21752dbca1 SHA-1: c5b5ed6eedcc4fdf852b4771b56b06fb50ffa24b SHA-256: d1f38faf65103074fedcdad90409ab57f265ccd666499ab14b51d48a7c04f282
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for a 'free download' of an ebook, combined with a call-to-action phrase. This indicates an attempt to trick the user into clicking the malicious link, likely leading to malware download or a phishing site.

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://gettraff.ru/strik?keyword=coraline+ebook+pdf+free+download
    • http://lodupab.scherrieandsusayeformersupremes.com/uploads/1/3/0/9/130969632/fuzominelarivup-neneku.pdf
    • http://dizopep.sealustsailing.com/uploads/1/3/1/3/131381787/7454258.pdf
    • http://files.wlfoundation.net/uploads/1/3/0/8/130874262/korasipaxe-gebenuru-suparobob.pdf
    • http://files.salonindigopa.com/uploads/1/3/1/4/131482851/9bc85678.pdf
    • https://site-1036918.mozfiles.com/files/1036918/gowasupudotuliw.pdf
    • https://site-1037875.mozfiles.com/files/1037875/88360628484.pdf
    • http://pemavok.tanyagjewelry.com/uploads/1/3/1/4/131406821/dojopikolunitepupuze.pdf
    • http://zopome.whynautical.com/uploads/1/3/0/7/130775440/2475678.pdf
    • http://files.silverrescue.org/uploads/1/3/1/3/131398334/likiremegemop.pdf
    • http://nisudoker.miriamruberlartist.com/uploads/1/3/2/7/132710634/xumotojeduwajuw.pdf
    • http://files.letscheweddings.com/uploads/1/3/0/7/130740568/rojijagotevu-disumenina.pdf
    • https://uploads.strikinglycdn.com/files/21a9e84b-435e-4eac-8ac8-e22aa49fdf17/kenikokikisaxipopizete.pdf
    • https://uploads.strikinglycdn.com/files/f7523681-eee6-4dbb-9881-a7cb13241eda/55346079373.pdf
    • https://uploads.strikinglycdn.com/files/ca23e606-438f-4de0-a9a8-439456840089/wutugugo.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_off0000631d.bin
e9ee7b8e91f27da8d5e7a257ccac021d1c2a0ec3c42fdddcb75c4506a31e30a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 5060 bytes
font_01_sfnt_off00007470.bin
c467b394771a117461dfda67cc6bfab543c885e25cf418d1b248970f081d702b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7470 10452 bytes