Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7fc101f515eda74…

MALICIOUS

PDF

42.2 KB Created: 2020-08-26 18:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f135c53e87c7e15f11521b9ae6e45a32 SHA-1: 46e214bc24f272631a256603da0f7130784a3734 SHA-256: e7fc101f515eda747eedc35c6b3a3b94124b76de4d56b49f3ce1b033d0a9a22d
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains hosting other PDFs, forming a link farm. One primary URL, 'https://ttraff.com/pify?keyword=intraday+liquidity+reporting', is identified as a malicious redirector. This suggests a social engineering attack aimed at driving traffic to potentially malicious content, possibly for phishing or malware distribution.

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=intraday+liquidity+reporting
    • http://xewexog.educationalpsychologisttherapy.com/uploads/1/3/0/8/130813364/9f0456e1a46d.pdf
    • http://gugodeva.trgraphicdesign.com/uploads/1/3/1/3/131384279/8404317.pdf
    • http://files.alpinecbd.co/uploads/1/3/1/8/131871994/da58f8.pdf
    • http://podik.blueridgeairguns.com/uploads/1/3/1/0/131070161/94d34.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/ropizelup.pdf
    • https://cdn.shopify.com/s/files/1/0432/3767/1075/files/mercedes_c180_avantgarde_2015_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/5490/4997/files/mumuzuvidezuzi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4198/7479/files/10687776312.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/poxisomujetije.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/vawiloduxugiranenowi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0958/6853/files/66590591351.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/21011093834.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/35485628585.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/brazil_economic_history.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/bold_italic_font.pdf
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/wowamodesu.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_off000068f6.bin
0a5b60cb505389c18898021057d40488c5b7f4fb6366110362e28957a91b8cd0
pdf-font-stream PDF embedded font (sfnt) at offset 0x68F6 5116 bytes
font_01_sfnt_off00007a5b.bin
9b6c9d7f254b30986b347f53e927e77a90dfa6311af6e00ab37b27f7a0c80aa5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5B 9852 bytes