Malicious PDF — malware analysis report

Static analysis result for SHA-256 461502667db12d3e…

MALICIOUS

PDF

47.5 KB Created: 2020-08-30 08:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c74ad4c67099d52eec31ea59002cb4b4 SHA-1: 8945c26ac18197d16829b70b4df67337f1dba73c SHA-256: 461502667db12d3ec6206d9fe2725492ba140b8fe38b981fd6b46282e7db6e58
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=fast+furious+7+full+movie+in+hindi+filmywap'. The document body, though heavily corrupted, also contains this URL, suggesting a lure for pirated content to redirect users to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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/wix?keyword=fast+furious+7+full+movie+in+hindi+filmywap
    • https://cdn.shopify.com/s/files/1/0433/0265/0020/files/boise_cascade_plywood_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/miteserat.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/causative_have_something_done_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/2683/1784/files/kidaxatufesurizat.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/nujobeposijinekiforuled.pdf
    • https://static.usrfiles.com/ugd/b8c837_571e4396566d4f60a43440070d58006d.pdf
    • https://cdn.shopify.com/s/files/1/0450/5973/5704/files/surah_ar_rahman_file_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/98604112024.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/ronodinewinonutoxunoloz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/35745587684.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/xunagejibotilatipenopu.pdf
    • https://static.usrfiles.com/ugd/5a1791_b56cfc5d62fa425882dc26dafdf808df.pdf
    • https://static.usrfiles.com/ugd/b8c837_341c047d8f05414491fea50d1d68e377.pdf
    • https://static.usrfiles.com/ugd/e73fea_26e012a3347d4cadac274a25e5d17d87.pdf
    • https://static.usrfiles.com/ugd/73f3b0_43adf5871910429b9e8f8becacf99c44.pdf
    • https://static.usrfiles.com/ugd/b8c837_b24f09a0afc94eb8a3a36743a3374409.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a68.bin
3b1e4e0e1c04fb397ebd153654c0690fb91ac713a40d716b7e1b6a82ea9b404c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A68 5452 bytes
font_01_sfnt_off00007ce2.bin
c140a833918c14ea367dd5c193554752664c55183570491056b5895f7262dd69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE2 11060 bytes
font_02_sfnt_off0000a2aa.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2AA 4324 bytes

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