Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49790abc05673aa…

MALICIOUS

PDF

48.8 KB Created: 2020-08-06 02:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31bb64a7bfec3bee038cf67b220d856a SHA-1: b1545ae5995df6e41c1af1862c524c99124796fe SHA-256: d49790abc05673aad607ffb1d35be363e1ef4e46a00a1f2b068e14ab8f1463da
152 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links directs to a known malicious redirector at `ttraff.ru`. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to disguise malicious activity. No scripts were extracted from this sample.

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.ru/pify?keyword=mango+production+guide+in+the+philippines+pdf
    • http://files.gilliantorckler.com/uploads/1/3/0/8/130874629/gomenevidi-kinepowa-xasokipa-xupuzateseroji.pdf
    • http://files.ateachingginger.com/uploads/1/3/0/7/130738984/368c5c95512.pdf
    • http://files.phoenixvillexc.com/uploads/1/3/1/4/131453132/dazanixafeb-wolawafomil-fuzigirobiruvi-masotoxo.pdf
    • http://files.dewittcountysc.com/uploads/1/3/0/7/130739489/293041.pdf
    • http://files.folrac.com/uploads/1/3/0/9/130969080/9485075.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/98976290202.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/88522078921.pdf
    • https://cdn.shopify.com/s/files/1/0437/3128/8216/files/98559888707.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/36743202595.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4651/files/86935178502.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58580374151.pdf
    • https://cdn.shopify.com/s/files/1/0430/6318/1463/files/42418371459.pdf
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/67901178897.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/xabogobikusedub.pdf
    • https://cdn.shopify.com/s/files/1/0429/2031/2991/files/7919523939.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_off00007fc4.bin
2160ee75235a72ba57b5ac73e33cbdd8dcc903324883f59e5b57994626e932b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC4 5424 bytes
font_01_sfnt_off00009240.bin
31c38ffe7085d3863aa6f7bc27ff1d277c67a17f780dfb630ce0838827347cab
pdf-font-stream PDF embedded font (sfnt) at offset 0x9240 10364 bytes