Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b3c0a5c81cb61a9…

MALICIOUS

PDF

40.3 KB Created: 2020-09-09 03:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d10e231d75900f4ac2c4b9bedebb0ea SHA-1: 6ff71dc3b668cc50bbe07576babe11d9137372bd SHA-256: 0b3c0a5c81cb61a9628828ec4a17c3125cbd7bb43a6de31077116b057befd28c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.link, which is designed to lead users to malicious content. The document also functions as a link farm, pointing to numerous other PDFs, likely to obscure the malicious intent. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.link/wix?keyword=get+email+template+magento+2
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0460/3717/2383/files/85793750718.pdf
    • https://cdn.shopify.com/s/files/1/0429/7018/5879/files/vishnu_bhagwan_photo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4468/4454/files/logowiritano.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3082/files/creeper_aww_man_song.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/dragon_s_blade.pdf
    • https://cdn.shopify.com/s/files/1/0440/1935/1710/files/82984340619.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/android_one_mi_a1_review.pdf
    • https://static.usrfiles.com/ugd/b13fd1_b3c0ba607f784b12ab0d5f80af1efe89.pdf
    • https://static.usrfiles.com/ugd/6203b9_ae62ade46c8f49de8de406a202e7e062.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006212.bin
46d0dcaf39b18eea9bb4c7850d7c26ef4d8d20c3f775d4279ab2e2ff618f9728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6212 5028 bytes
font_01_sfnt_off00007322.bin
c2755e166116fd3b0e2e70b9a8093662a8312bacde17b0a9dd59440d96f41622		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7322 9848 bytes

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