Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e05860c1676d89…

MALICIOUS

PDF

38.4 KB Created: 2020-08-20 00:59:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f06c38c46e41325783ae032e8e07fab9 SHA-1: 577d5ac5e7f993f11e95a5074f50a753a2780450 SHA-256: b1e05860c1676d8905117ffff247f7da32e0cdc70d261fd628e96b64c1accd9e
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=java+8+jre+without+oracle+account`. This suggests the document's primary purpose is to redirect users to malicious content, possibly disguised as a software download. No scripts were extracted, but the presence of the malicious redirector is a strong indicator of malicious intent.

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.cc/pify?keyword=java+8+jre+without+oracle+account
    • http://files.yoga-gayatri.si/uploads/1/3/0/7/130738639/sifolelefowizejelu.pdf
    • http://vafumaxon.friendlifehacks.com/uploads/1/3/2/6/132682137/879379.pdf
    • http://files.cflbears.com/uploads/1/3/1/4/131406717/pujunezapaxiwu.pdf
    • http://kugodufev.jenniferdowneywrites.com/uploads/1/3/0/7/130775518/28bd5c6bdde2fa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/majozoxanagaga.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/st._augustine_confessions.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50833930904.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/97417469845.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/gafolidaxiviponala.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/autocad_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/veparuz.pdf
    • https://cdn.shopify.com/s/files/1/0449/5107/7032/files/el_alcoholismo_en_los_adolescentes.pdf
    • https://cdn.shopify.com/s/files/1/0431/9071/4532/files/vetegixalek.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/57719731647.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0146/files/nibusilakegetu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/49097046232.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_off00005897.bin
66c085a6377e52495bd2984cfe276076d6f22aa5a916fe1c3add38748593eb53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5897 5120 bytes
font_01_sfnt_off00006a15.bin
9a91f14765d0b6d02a0439973c6e5ff5ae59a0fd1135a1b46250ee35138305a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A15 10040 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.