Malicious PDF — malware analysis report

Static analysis result for SHA-256 278583ff11d95699…

MALICIOUS

PDF

40.4 KB Created: 2020-09-01 12:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5016d603425390523215ba1a5bbd8d4 SHA-1: 30b166a482d26cb2471ec0c3425ae34be93e2337 SHA-256: 278583ff11d95699d0150b02ed4f8f88bee49cfded404dcda69b01820eef99dc
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Boswells school 6th form' and a URL that appears to be part of a link farm. The primary malicious link, https://ttraff.cc/wix?keyword=boswells+school+6th+form, is a critical finding, suggesting a phishing or malware delivery attempt. The presence of numerous shopify.com links, while mostly benign, contributes to the link farm heuristic.

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.cc/wix?keyword=boswells+school+6th+form
    • https://cdn.shopify.com/s/files/1/0460/3310/9156/files/celina_sharma_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/7886/0454/files/veluwovibegitifomi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/65277170034.pdf
    • https://cdn.shopify.com/s/files/1/0435/6607/1957/files/get_your_guide_berlin_phone_number.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0462/3869/5573/files/97924098823.pdf
    • https://cdn.shopify.com/s/files/1/0462/0120/8985/files/4547149627.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/rtl60._bpl_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/satimezulevoremowozinize.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/79017914337.pdf
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/ccna_routing_and_switching_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/jamberry_7_day_challenge_card.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/lerewametuji.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_off0000606c.bin
6641fc4f3ecb28d9d372fe9b67880fc781d2552820a9b1777f0ed69d982afdbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606C 5204 bytes
font_01_sfnt_off00007212.bin
6043f4effc6cbead47429dcb2ced7b15019997a16a69c76d014d26f38ce6776c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7212 10304 bytes

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