Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fe2fe88a964f75…

MALICIOUS

PDF

40.2 KB Created: 2020-08-02 22:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25ee934c1dfb42bc96c77b545cfd2199 SHA-1: f49582dfeb18c761739a0a8506cfc36ecab18207 SHA-256: f2fe2fe88a964f755a0b35b5a0152d02c140709c6f6a91720019354a16a082ea
154 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, identified as a link farm, pointing to external resources. One of these links, https://ttraff.com/pify?keyword=sofia+the+first+scrambled+pets, is flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious websites, likely for phishing or to download further malware. No scripts were extracted, and the document body contained mostly binary data and URLs.

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.com/pify?keyword=sofia+the+first+scrambled+pets
    • http://files.kaclothesline.com/uploads/1/3/1/4/131406811/b09b7102.pdf
    • http://rugap.nimblehillbrewing.com/uploads/1/3/0/7/130738914/tobujeta.pdf
    • http://files.whispergathering.com/uploads/1/3/1/8/131856039/9311032.pdf
    • https://cdn.shopify.com/s/files/1/0430/6980/0597/files/fikakidag.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/75536735437.pdf
    • https://cdn.shopify.com/s/files/1/0430/9614/6073/files/penudo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4060/4313/files/tokobikunetibedir.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/lightroom_6._0_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/84008132721.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/zeretakenapuzajarine.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/43460891715.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/49911697398.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/vogerilivezajefozeza.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/73624230529.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7056/files/53123254179.pdf
    • https://cdn.shopify.com/s/files/1/0432/4179/9843/files/d_d_3._5_downloads.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_off00005f39.bin
22810c2f14cba254db9bf5c562584462297ad4c4a803d802b00ad772a7f9fc20
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F39 5636 bytes
font_01_sfnt_off0000722e.bin
8c3e064909ea118b422a32d764804d7286a6baf8937c2b500cb01934248e656a
pdf-font-stream PDF embedded font (sfnt) at offset 0x722E 9864 bytes