Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e33f6f0b7ab1285…

MALICIOUS

PDF

47.9 KB Created: 2020-08-03 00:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8081fecb8a97d6ff5a3d0294a287eaf7 SHA-1: 2c8217b89bb4105266eac379ad3cfc7a99176af2 SHA-256: 0e33f6f0b7ab1285cf5285389884d751fb174047d4c8a1ef3248b10bf973c3e7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a malicious site. The document body also contains numerous links to external PDFs, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a phishing or redirection attack.

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=wayne+barlowe+guide+to+extraterrestrials+pdf
    • http://files.theprismwithin.com/uploads/1/3/0/9/130969775/gileloloxebeboloje.pdf
    • http://files.bbvpublishing.com/uploads/1/3/1/8/131856569/xokaxejedamojeb.pdf
    • http://files.14weekends.com/uploads/1/3/0/9/130969469/gawuni-mutug-nuruduvijujixuv.pdf
    • http://files.buffalocherryblossomfestival.org/uploads/1/3/0/7/130739227/0e645808.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/3631/8616/files/wegikojegejokanirawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1619/1125/files/sigamubuvafexurumawode.pdf
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/tuwibego.pdf
    • https://cdn.shopify.com/s/files/1/0435/5509/4679/files/jepowalefofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/tovosusobedopebetoteni.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/33355738234.pdf
    • https://cdn.shopify.com/s/files/1/0437/2175/2726/files/gelelubimubivatejap.pdf
    • https://cdn.shopify.com/s/files/1/0432/3590/1602/files/rs3_herblore_calc.pdf
    • https://cdn.shopify.com/s/files/1/0435/9376/0931/files/cruis_n_usa_n64.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/gaggia_classic_espresso_machine.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/77257557305.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/86979761971.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/75989371897.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ea7.bin
351388bcc71f704466f9d968f9ac3df4149197184430fe9de3a8338d43088219		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA7 5504 bytes
font_01_sfnt_off00008188.bin
3a66ccccb5e75df1169ea6037adca6d7502ef9a5717c15abb3b0ecfdd5b8bd5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8188 10160 bytes
font_02_sfnt_off0000a458.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA458 4324 bytes

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