Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd33d317fc9694d…

MALICIOUS

PDF

40.7 KB Created: 2020-08-08 15:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73e513bf664781910c47ce7ffed11347 SHA-1: 30d5904e9d3e397c73ec3f3d3d1249589f87eedc SHA-256: fdd33d317fc9694db1fae0acbdea7e73a1b237582433cddb940984b87111e01f
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with multiple embedded URLs pointing to Shopify and other domains, ultimately redirecting to a malicious URL. The primary malicious redirector is identified as https://ttraff.cc/pify?keyword=sunbeam+bread+maker+recipe+book+pdf. This technique is used to obscure the final malicious destination and potentially improve search engine ranking for malicious content. No scripts were extracted from this sample.

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/pify?keyword=sunbeam+bread+maker+recipe+book+pdf
    • http://files.americasyouthsports.com/uploads/1/3/2/8/132814476/897202.pdf
    • http://zejediz.shedpotterybyjohann.com/uploads/1/3/1/3/131383284/595597d.pdf
    • http://files.capecodviolin.com/uploads/1/3/0/9/130969990/2b00c.pdf
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/49527251737.pdf
    • https://cdn.shopify.com/s/files/1/0431/0663/1833/files/31033552204.pdf
    • https://cdn.shopify.com/s/files/1/0432/2616/9503/files/dream_and_nightmares_meek_mill_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3978/4103/files/vewinutuvasuxi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/21201499485.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0282/files/84964944313.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/letuxuzajikopagenomezeta.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/lanogomojajoverusapijutup.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/fazodogavijovanawawem.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/15057686535.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/vawitidipawe.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_off000061d0.bin
ed16a9f2b591c9496f782ffeb5c014fae39ba25c470990a3c0234889e62adc6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D0 5396 bytes
font_01_sfnt_off00007417.bin
8dbe00ea84289e4d7b97377bd69551b2b1d3e2e18df945b3c0adf52569f03652		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 9972 bytes

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