Malicious PDF — malware analysis report

Static analysis result for SHA-256 4501c9d2614fd4eb…

MALICIOUS

PDF

42.1 KB Created: 2020-09-01 02:56:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4253fbb7e32585abb7dfc43473b0e8b6 SHA-1: 1495eef120ff40c12e28717c9065850b7628a35a SHA-256: 4501c9d2614fd4eb031df96fb8a5cbbc6c32ec761dd6a43dced018e30882a155
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, disguised as a wedding invitation template. This is further supported by heuristics indicating a malicious redirector and a link farm designed for SEO manipulation. The document body contains a call-to-action phrase, reinforcing the lure.

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=wedding+invitation+envelope+template
    • https://cdn.shopify.com/s/files/1/0432/9390/0958/files/rewujefak.pdf
    • https://cdn.shopify.com/s/files/1/0440/2456/1829/files/44593824685.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/sat_practice_test_1_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/android_studio_adb_install_apk.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/arduino_projects_for_beginners_with_code.pdf
    • https://cdn.shopify.com/s/files/1/0438/6570/2565/files/fenifasefe.pdf
    • https://cdn.shopify.com/s/files/1/0448/1653/1617/files/tads_chicken_and_dumplings.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/90043915158.pdf
    • https://cdn.shopify.com/s/files/1/0461/1345/6291/files/94679303353.pdf
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/fakulimofomovopetigiwisaf.pdf
    • https://cdn.shopify.com/s/files/1/0459/7252/1127/files/52529894350.pdf
    • https://cdn.shopify.com/s/files/1/0440/4169/9478/files/lomigij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faramerujinusopuko.pdf
    • https://cdn.shopify.com/s/files/1/0433/6972/6110/files/bahaddur_kannada_movie_song_mp4.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_off00006703.bin
52f42054c7979a0893adfde8ddfd18a47521632fde6a9812e9e2ae3d57f2c254		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6703 5076 bytes
font_01_sfnt_off00007851.bin
789524073e804359144c64c126cf8bc9ace06a2139a54a575f7a09cd3e6d50f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7851 10392 bytes

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