Malicious PDF — malware analysis report

Static analysis result for SHA-256 2180a6ab6169ac8a…

MALICIOUS

PDF

38.5 KB Created: 2020-08-09 18:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4404d9ab0c274331aa0ac05ac38f5a9d SHA-1: 81383cee172c0d1aac768aee01f94a1e145ecf99 SHA-256: 2180a6ab6169ac8adae0d92a7ea3b1cb49cb9e494b0c69f4c546171954ab0e03
128 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate downloads, but the primary link redirects to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and a lure related to a "carrier psychrometric chart pdf download". This suggests a phishing or scam attempt to redirect users to malicious infrastructure.

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=carrier+psychrometric+chart+pdf+download
    • http://files.europeanburmesebc.org/uploads/1/3/0/7/130776200/danesimosiv_zazeludazax.pdf
    • http://files.drghs.org/uploads/1/3/1/4/131408942/1682535.pdf
    • http://files.smhumzaali.greatwebsitebuilder.com/uploads/1/3/1/6/131606262/7175b3f49b.pdf
    • https://cdn.shopify.com/s/files/1/0437/3463/0549/files/fewuwagafaduvi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/clinical_pharmacy_practice_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/85526812982.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8734/files/benefits_of_shared_reading.pdf
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/genetec_access_control.pdf
    • https://cdn.shopify.com/s/files/1/0430/8615/1833/files/38974061197.pdf
    • https://cdn.shopify.com/s/files/1/0432/9753/8203/files/around_the_world_in_80_days_movie_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7700/files/26314235596.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/yu_yu_hakusho_movies.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/86862415632.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/kalphite_queen_guide_osrs.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_off0000567e.bin
6cc2e532990c948e29b3fe45eb87e76f48e899e2c83c5ad2b3e9f69d1d9e3e16
pdf-font-stream PDF embedded font (sfnt) at offset 0x567E 5492 bytes
font_01_sfnt_off0000691a.bin
f8aba8eb72334fcea47a6e9cb739109695651199d5201cdbdc0fe7e010267b3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x691A 10556 bytes