Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7a76378f432382…

MALICIOUS

PDF

41.7 KB Created: 2020-08-30 02:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 703618a2b37745c163e10a9f4030e8b3 SHA-1: 0383e20c4fe424a9cb9bef4b9f64f91f940efac2 SHA-256: 2e7a76378f432382d9f4f847d4d90e2f246785c70b4b103c4e46501479e536f7
120 Risk Score

Malware Insights

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

The PDF file contains a link farm of 15 external PDF links, with the primary malicious link pointing to a redirector. The document body, though heavily obfuscated, contains the malicious URL. This suggests a social engineering attack designed to drive traffic to malicious infrastructure.

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=we+happy+few+thomasina+house
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/ceclor_375_bula.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/matakujadufod.pdf
    • https://cdn.shopify.com/s/files/1/0447/5112/6677/files/augmenter_sa_confiance_en_soi.pdf
    • https://cdn.shopify.com/s/files/1/0457/3393/7318/files/20831369231.pdf
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/the_guide_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1575/files/dokkan_lr_android_17_18.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/24762325080.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/toshiba_dvr620ku_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5622/files/samples_of_abstracts_in_apa_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/mebas.pdf
    • https://static.usrfiles.com/ugd/4b7290_9cbbb6ff0f9c4d8fb539c22af86c6759.pdf
    • https://static.usrfiles.com/ugd/824332_dd0ed28085fd41c6b1a2bc71d720c57b.pdf
    • https://static.usrfiles.com/ugd/bfbc46_3b0420763d254cf589407d8a978671e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_ebea13e3c4a541a6bf99565aba021981.pdf
    • https://static.usrfiles.com/ugd/b8c837_b42e3caae41f4ed29fa47b2e6b09220b.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_off00006424.bin
18cb178bf206e30a2093f8c29052dd3701c774ac1dfdfec741d12ab726d59ac3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6424 5220 bytes
font_01_sfnt_off000075f0.bin
b6add8276f7a85324259f658d83695e7b758e4ecdeb7ffbe9ea09ccd5ac41738		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F0 10488 bytes

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