Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0867168844ab07a…

MALICIOUS

PDF

44.2 KB Created: 2020-08-17 02:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85671e298aa7e33100a950467a9d96d4 SHA-1: c2f3d8ddf5713b66ee581b182328872616bb46c3 SHA-256: e0867168844ab07ae93bc99978690bd60a9289996036e01ffb05c68af67ffbb2
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which are hosted on Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains text suggesting a lure related to "Respiratory system diagram answers" and explicitly includes the malicious URL. This indicates a phishing or redirection attack designed to lead the user to harmful content.

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/pify?keyword=respiratory+system+diagram+answers
    • http://pusuki.gregoryharpermusic.com/uploads/1/3/1/3/131380600/5219115.pdf
    • http://mexoti.mosaicjusticenetwork.org/uploads/1/3/1/3/131383791/7b25547f2800.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/domet.pdf
    • https://cdn.shopify.com/s/files/1/0444/0922/5382/files/socket_head_bolt_dimensions.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/lolipafaxoxudom.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/fexikomi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/xekarodoputafadefen.pdf
    • https://cdn.shopify.com/s/files/1/0428/7453/6103/files/pupelakixilibitazuxidili.pdf
    • https://cdn.shopify.com/s/files/1/0438/4954/7938/files/erling_kagge_silence.pdf
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/48448896075.pdf
    • https://cdn.shopify.com/s/files/1/0438/0511/4528/files/inflammatory_bowel_disease_journal.pdf
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/7317031951.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/91793412418.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/pros_of_school_uniforms_articles.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/kumivebixuxuki.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006340.bin
979161bd55705fa210ce96479287d7febe2bf7537d942c0d83b9346726fbfc40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6340 5236 bytes
font_01_sfnt_off0000750d.bin
2a4d92835c5b91bb821d49ccc26500e2c67dfa6c2cca04658bc76a40ca060f87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x750D 9616 bytes
font_02_sfnt_off000095bf.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95BF 4324 bytes

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