Malicious PDF — malware analysis report

Static analysis result for SHA-256 30519b992a27bacd…

MALICIOUS

PDF

40.0 KB Created: 2020-09-02 10:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12518f30cb4f3d2602b7541ce57f9598 SHA-1: de9c2bd01dc37d9dcca2caaf67e7eb64a95569a4 SHA-256: 30519b992a27bacd4dca497e0da27c3c015d0740ca77b3edea9bf241a8fd39c6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

This PDF file contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for 'landscape architecture basics pdf'. The primary malicious URL identified is https://ttraff.me/wix?keyword=landscape+architecture+basics+pdf, which is likely used to redirect users to further malicious content. The presence of many shopify.com links suggests an attempt to blend in with legitimate content, a common tactic in SEO poisoning and phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=landscape+architecture+basics+pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/meragavafeduxilaxopuxaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/53139375908.pdf
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/99102418189.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/lezebututududobop.pdf
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/marksheet_format_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/josomajijaserujos.pdf
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/circus_circus_gateway_menu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1965/7635/files/functional_programming_language.pdf
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/zadomot.pdf
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/tidunububuxizo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/zuxopetekopejijifet.pdf
    • https://static.usrfiles.com/ugd/79cb75_ec293041157046ba857a93dcd96592b4.pdf
    • https://static.usrfiles.com/ugd/868401_5aea992d7dea4bec98f8be53f83ba852.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_4ffe1fad796a40b19b4c218ac3c12718.pdf
    • https://static.usrfiles.com/ugd/e1c37d_daddd2f131ac4aa19921c34196487f97.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_off00005d7a.bin
9870ca3bb79f449403113fcd2d5458b41da8b58e64f706e21a494286c33e5ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7A 5292 bytes
font_01_sfnt_off00006f75.bin
d70d8898c175558471410dec6bbf0910e03bcfc620f9aa8f0488e0732a636a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F75 10436 bytes

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