Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6334385d0cf32f…

MALICIOUS

PDF

49.0 KB Created: 2020-08-09 10:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7dd1a5385481bae66205be0c0d3c747 SHA-1: cfc3987cda249c470fa3a44496ffb82449a21fef SHA-256: 0a6334385d0cf32f8f5f8d5ae3a0476dd562682996d5b940af2c7e29a1c841c1
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to 'Mla citation format example pdf' and a URL that appears to be part of a link farm, suggesting a lure to attract users. 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.com/pify?keyword=mla+citation+format+example+pdf
    • http://files.han1image.com/uploads/1/3/2/6/132681438/7068857.pdf
    • http://lijir.nonreligiousspiritual.com/uploads/1/3/0/7/130776485/rolowizorufisa-gewobo.pdf
    • http://files.webuysouthernmdhomes.com/uploads/1/3/1/4/131409794/828471.pdf
    • http://files.granbycumsutton.org/uploads/1/3/1/3/131380107/koluveselibawo_bazemelu_bitawajiton_ponerumur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/3729/3718/files/71090584689.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/best_ar_15_speed_loader.pdf
    • https://cdn.shopify.com/s/files/1/0434/6262/3394/files/36639815601.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/nox_player_can_t_type.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/83928621408.pdf
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/50361150172.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/17888052570.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/dofumaporefaxozemevir.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/vesafarefuzejetoposazonup.pdf
    • https://cdn.shopify.com/s/files/1/0428/7106/2684/files/13997398048.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/98726737224.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2998/files/53990195502.pdf
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/75502225613.pdf
    • https://cdn.shopify.com/s/files/1/0433/2398/1979/files/60765551108.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008295.bin
696754080f38db949e5092ff08cbe961f7ed22b3b545f7531a748706aae31aa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8295 5196 bytes
font_01_sfnt_off00009443.bin
87854a6472b3589a333ef18fb8c43a9ea69c3e8cccaeb2d8289aa2cc8b1e9505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9443 10120 bytes

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