Malicious PDF — malware analysis report

Static analysis result for SHA-256 506d7603cf76107c…

MALICIOUS

PDF

43.9 KB Created: 2020-08-26 08:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0424a94e1bb77ec844abe52e88394dc6 SHA-1: fe830dcd6c013f5712c820ee01b059692aa0c90e SHA-256: 506d7603cf76107cd0bff7413beb451156f398b508d94a7769f7c033193005b3
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to download content. The presence of a link farm further indicates a malicious intent to distribute content or redirect users. No scripts were extracted, limiting the analysis of the payload.

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.com/pify?keyword=oxford+bookworms+stage+3+pdf+free+download
    • http://files.farmhousetackshop.com/uploads/1/3/2/7/132740186/litines.pdf
    • http://files.aaresi.com/uploads/1/3/0/9/130969194/9997484.pdf
    • http://files.nawratseymourhr.com/uploads/1/3/2/7/132740399/5326059.pdf
    • http://files.bhawkeyephotography.com/uploads/1/3/1/4/131454586/finateroxamaserakile.pdf
    • http://jabapil.ipa-ok.com/uploads/1/3/1/4/131406744/1366854.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/baritone_ukulele_fretboard_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0448/2056/2077/files/free_calendar_july_2018_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/9728/5027/files/vowokume.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/associativismo_sebrae.pdf
    • https://cdn.shopify.com/s/files/1/0438/3247/5798/files/worthy_is_the_lamb_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/47219079096.pdf
    • https://cdn.shopify.com/s/files/1/0431/7360/9636/files/berlitz_japanese_phrasebook.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7504/files/kexozadebulufetusije.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/38325551260.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/dazixuvefosuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/gabowojovipizixugukakaza.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_off000067d5.bin
694cda30ccdbf9d9a6a8d64fe66caed4c619d1a13fa9ef168f53998e67a23409
pdf-font-stream PDF embedded font (sfnt) at offset 0x67D5 5916 bytes
font_01_sfnt_off00007bfe.bin
54272f78185873d4c617bf733bbe55aacd4135171e32c39dd9401570da802c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFE 10664 bytes