Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63c14d149d3462c…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 23:23:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52b96ba6c36afb050dbd2b12d2119215 SHA-1: 258acc8886589fce4503207351609b2eaab9a09f SHA-256: c63c14d149d3462cca483129a23f9936df4280cecca34b2f155047531afb20be
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.cc/wb?keyword=berg%20balance%20scale%20adalah%20pdf', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the PDF structure itself is the delivery mechanism.

Heuristics 3

  • 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.
  • 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.cc/wb?keyword=berg%20balance%20scale%20adalah%20pdf
    • http://dudetik.gammasupport.org/uploads/1/3/0/9/130969090/folumudima-kimuxivotemif.pdf
    • http://files.felixschuster.org/uploads/1/3/0/8/130873838/nofisofejamin.pdf
    • http://files.experiencebirthandbeyond.com/uploads/1/3/1/6/131637953/8760802.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0122/files/fuzzy_logic_genetic_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0440/8963/9077/files/xatofikomuwabi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6038/8252/files/21398967816.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6055/files/capites_da_areia.pdf
    • https://cdn.shopify.com/s/files/1/0439/2304/6555/files/89137580307.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/fupiluw.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/articles_on_bullying_in_schools.pdf
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/mulasubakoluxitabunudepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7488/7573/files/51491043455.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/moxolamotininatigunok.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/52871383265.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_off00006521.bin
f31f9ca871f908be3e89c1f049f36b582f791d6031c87ef43dc2b6c467536c9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6521 5604 bytes
font_01_sfnt_off00007820.bin
5f17f43410839820a8dbfe8c11939c0716eec2e10372ace042bc049bd9d6cfa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7820 10264 bytes

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