Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec9374ec6e6ae019…

MALICIOUS

PDF

44.0 KB Created: 2020-08-31 11:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90f29efd3221e73153066e3d16aa779f SHA-1: d1ed642e25504bd0ce46789df39e999b5401f0c7 SHA-256: ec9374ec6e6ae019c80df5c3e6a9451eb2b974ba4c7734de2bfb4979c90b50bc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify-hosted PDF files, suggesting a link farm. One critical heuristic firing indicates a direct link to a known malicious redirector at 'ttraff.com'. This suggests the document is designed to lure users to malicious infrastructure, likely for phishing or to download further malware. 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.com/wix?keyword=law+internship+cover+letter+template
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/23168152595.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/polabopin.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/gesotuvetalubedu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5087/6580/files/the_spectacular_now_full_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/50222697465.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/bipafipodopevedor.pdf
    • https://cdn.shopify.com/s/files/1/0428/8774/1599/files/pediatric_cardiac_anesthesia.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8886/files/bepiratijufutinutixi.pdf
    • https://cdn.shopify.com/s/files/1/0441/3915/1512/files/heat_effects_and_calorimetry_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/xutini.pdf
    • https://static.usrfiles.com/ugd/769f78_2d96cd511e8045b3a7ed5b2dd821e04a.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_44034e07f02f49b58fb4fe165ea9659c.pdf
    • https://cdn.shopify.com/s/files/1/0463/5669/3154/files/46578877582.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1366/files/bsf_nic_in_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/gusurimevo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3852/3047/files/vpn_android_2._3_apk.pdf
    • https://cdn.shopify.com/s/files/1/0467/5852/7139/files/molebufolowumigapewes.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_off00006e97.bin
cdca57c7c84eaa8323da387180d1d9edb772e476942272a77190b1192bb2c514		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E97 5268 bytes
font_01_sfnt_off0000806d.bin
97b2c6942418bfb47119f4174ba64072042c755746d8649b7f578fab56176dad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x806D 10136 bytes

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