Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1238b97495203ec…

MALICIOUS

PDF

36.3 KB Created: 2020-08-25 01:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07721d1657f6516a1b2efa8ed3027167 SHA-1: e1144702491a558ab6b620037f937ca495e7ca85 SHA-256: d1238b97495203ec8c5debe15341ae8c70b4a000406c4b652a9b4179b7d67f50
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, also contains the same redirector URL. This indicates a likely attempt to lure users to malicious sites through a link farm, a common tactic for distributing malware or conducting phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=manual+notebook+acer+aspire+one+kav60
    • http://kujoje.athena-may.com/uploads/1/3/0/8/130814229/wufeken_fopojisisunid_gomak.pdf
    • http://files.carolynrim.com/uploads/1/3/0/7/130740438/velabaxop-papaza-jagevewazubipu.pdf
    • http://files.lindsaylal.com/uploads/1/3/0/8/130814100/puwakirur.pdf
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/30600224737.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/93635493352.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/keposozopezumolaluj.pdf
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/pemizilibepaf.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/4418551508.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdf
    • https://cdn.shopify.com/s/files/1/0462/1887/0938/files/us_foods_catalog_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/zufuvodabod.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/kalewe.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_off000045e3.bin
0391c890ff4304d7b780ae6484cce41cbec9038a97645120dc9ac17bab9c2a77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45E3 5492 bytes
font_01_sfnt_off000058a5.bin
5e6c8e97a188694b6e20c8726b4186ba66f66bf647e632a33692113b67a53f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A5 14228 bytes

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