Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da5e0a07e30a427…

MALICIOUS

PDF

34.0 KB Created: 2020-09-03 18:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cc8b39b4f2ad5a236d4e29f1cf55861 SHA-1: a92852a708497b700a85b8122f05aa14f33c8f71 SHA-256: 2da5e0a07e30a42776a5402c5d16c69023047e3ce16f6d40ff951c1c9a47261f
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.me/wix?keyword=bresser+bird+feeder+camera+instruction+manual'. The document body, though partially corrupted, contains text related to a 'Bresser bird feeder camera instruction manual', suggesting a lure to entice users to click the malicious link.

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.me/wix?keyword=bresser+bird+feeder+camera+instruction+manual
    • https://static.usrfiles.com/ugd/4329d7_a170024956914194842acb9a766924c2.pdf
    • https://static.usrfiles.com/ugd/74a852_4987e759b7704a239ea03463630e0486.pdf
    • https://static.usrfiles.com/ugd/b8c837_486f1f31eea14163a8fc8d6835a42799.pdf
    • https://cdn.shopify.com/s/files/1/0428/6601/6412/files/royal_cross_cut_12_sheet_paper_shredder.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/dilidalimegejilufiteguz.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/tekipokifatozofuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/67254783694.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/android_scale_bitmap_maintain_aspect_ratio.pdf
    • https://cdn.shopify.com/s/files/1/0432/3039/6574/files/82108959903.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/libukosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5644/8156/files/sudos.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/opposite_adjectives_english_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0448/4956/1757/files/foods_to_fight_cancer.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_off000046e6.bin
3657cb61a4aaf74dad42b9f3084955371b22abc390a5964112cc6396f42d6e06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46E6 5356 bytes
font_01_sfnt_off00005902.bin
41f0c3db89aa12aab3ef2f3c71a7d3b19deb5e6cc6c4b79e585ec799f8b79f62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5902 9996 bytes

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