Malicious PDF — malware analysis report

Static analysis result for SHA-256 90b20bd69f4c575b…

MALICIOUS

PDF

43.1 KB Created: 2020-08-17 01:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b858f9e8281643a496a2501f0defe305 SHA-1: 4712970c61277459afafb7e134e50819b85901d5 SHA-256: 90b20bd69f4c575b2fb8c87a9cb2b701fbfef0734006083f333f50e22b994dcf
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, contains text fragments and URLs that suggest a lure to click on a link, potentially for a scam or to download further malware. The presence of a malicious redirector link and the 'SEO Link Farm' heuristic indicate a deliberate attempt to direct users to harmful content. No scripts were extracted, limiting the analysis of the payload delivery mechanism.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=s+letter+status+video++karo
    • http://babujuled.cagaragedoorrepair.com/uploads/1/3/0/7/130739919/7344980.pdf
    • https://cdn.shopify.com/s/files/1/0431/1272/6677/files/line_dance_stepsheet_electric_slide.pdf
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/url_response_get_rid_of_slashes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/74066401421.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/ethical_hacking_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/11808029231.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/duvave.pdf
    • https://cdn.shopify.com/s/files/1/0440/1758/2230/files/logirewoparip.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/55967873078.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/47752277814.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/6819262106.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f22.bin
93d8ba3f1950978f9d35b138528778d2d11e96cd040cf87796a66f9af39b8698
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F22 4820 bytes
font_01_sfnt_off00006f9b.bin
64d77cfd5465ebf0772c622fa843bfc4b2cf452383460b804eedfaba690c3e9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9B 10048 bytes
font_02_sfnt_off000091fe.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x91FE 4324 bytes