Malicious PDF — malware analysis report

Static analysis result for SHA-256 30dd5ceb891ca38c…

MALICIOUS

PDF

42.4 KB Created: 2020-08-31 03:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc7be053800118d5adb39006f9b9b000 SHA-1: 117801aec9bfcf1817c26b828970fc52026ef19a SHA-256: 30dd5ceb891ca38ce5070c56f33bf3f2f9c969461c881ba807e542f1c86ac8b4
152 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains a URL that points to a redirector, which is likely intended to lead the user to a malicious site or download further malware. The presence of numerous external links, many hosted on Shopify, suggests an attempt to manipulate search engine results or distribute content through a seemingly benign platform.

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/wix?keyword=outwitting+the+devil+akram
    • https://cdn.shopify.com/s/files/1/0440/4707/3445/files/tusavulefolu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/debivufapawepabitixog.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/72258822981.pdf
    • https://cdn.shopify.com/s/files/1/0434/0636/0725/files/a_levels_maths_p3_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/18226558151.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/59308486813.pdf
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/27588015345.pdf
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/glimmer_of_light_build_guide.pdf
    • https://static.usrfiles.com/ugd/a48928_f2ed6993c6c64f5bbfd5d837f93f0ee3.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_9bc56767ad654881bb121cd42c15fd37.pdf
    • https://static.usrfiles.com/ugd/299074_6943444277e049b283a18d85e647a08a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ac9d0e5cf1f46d081f2ad6ed61f82e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_8be2c0c2f518427cae1aabbd2899cc09.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_off00006902.bin
ad8f578d1f16a29c040b7d9afa718a8a332b7471d2fe727dea1d316e4555f279
pdf-font-stream PDF embedded font (sfnt) at offset 0x6902 5304 bytes
font_01_sfnt_off00007af9.bin
86dbe0ce3af8aaa8b64a4c1f0e50417e918a86da46480d45bd0c30c3885dbd4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF9 9980 bytes