Malicious PDF — malware analysis report

Static analysis result for SHA-256 548a2e8edca122a1…

MALICIOUS

PDF

64.5 KB Created: 2020-08-12 08:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ea0ac2ef493bbe31f872a4386af52b8 SHA-1: d50cdfb0975b011dd19ab530dc0df53b9c496e4d SHA-256: 548a2e8edca122a19a6b12ef62291f0c559c5ff3facfac93896d91c07e84c665
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at `ttraff.ru`. The document body, though heavily obfuscated, also contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm designed to drive traffic to malicious infrastructure. The primary intent appears to be to redirect users to malicious content via the `ttraff.ru` URL.

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=biology+in+telugu+pdf+free+download
    • http://files.skylinebitandspur.com/uploads/1/3/2/3/132302999/4cd9ed6.pdf
    • http://files.magicmomentsprincessentertainment.com/uploads/1/3/2/6/132683000/5bc0045c077b.pdf
    • http://files.beaulieuparkmusic.co.uk/uploads/1/3/2/6/132695365/pefixawide.pdf
    • http://files.eleanorneffpowell.com/uploads/1/3/1/8/131871745/112450.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifowugebivagobawogun.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/38488993559.pdf
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/kotefanatuwaferivatobidus.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/mafirapovowixivavub.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/mopujakuwuragarazarin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7028/3166/files/bajemudodexuzuwarexop.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.pdf
    • https://cdn.shopify.com/s/files/1/0436/7666/3961/files/8470450750.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70474217151.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/kogiputotojigozozejanigu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3541/9039/files/61465236227.pdf
    • https://cdn.shopify.com/s/files/1/0433/5380/0859/files/40404598730.pdf
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/lubavavokabu.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/
    • https://cdn.shopify.com/s/files/1/0

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006393.bin
370a87588c5abb4beec22fc687b980c39462aecdf13640333756e212b1069267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6393 5272 bytes
font_01_sfnt_off000075ab.bin
a069dafde0e246b5b41a7fbff80c762f933ebf8b35da5d75a8641f4e1e4d0356		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AB 20660 bytes
font_02_sfnt_off0000a69d.bin
c0b080a3303b8e939d585112c399c02879d5f0d732e84daf845a916286948345		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA69D 2116 bytes
font_03_sfnt_off0000b049.bin
3764744a28c6fe3e2fdb710535613177b672dd2192ae2b942a4648f1be908927		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB049 14632 bytes
font_04_sfnt_off0000dd61.bin
d9fd6dfb68e25185a609e5622a1055a7f4912469e393710fe0423d478489c4af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD61 16332 bytes

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