Malicious PDF — malware analysis report

Static analysis result for SHA-256 69178cf2e513b30a…

MALICIOUS

PDF

56.7 KB Created: 2020-08-11 03:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 571d392d117113595f74db11c6d310c6 SHA-1: 60f23c3426e7b88167cb6f186c7de80cf195a235 SHA-256: 69178cf2e513b30a0675465dfac869ae00ca87d71606d6f71d7d17cf08074977
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically a URL designed to look like a "pdf converter" tool. The heuristic firings indicate a malicious redirector and a link farm, suggesting the document is part of a larger scheme to distribute malicious content or phish for information. No scripts were extracted, but the presence of malicious URLs 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=amacsoft+pdf+converter
    • http://files.sudbrinkacademy.com/uploads/1/3/1/4/131482832/zekojoreribu-japopulexo-rowazuzoro.pdf
    • http://fixedu.columbusfoodtroll.com/uploads/1/3/2/6/132681670/sijifujupefil-larevi.pdf
    • http://files.onsitecprtrainer.com/uploads/1/3/0/7/130739415/784a623b8.pdf
    • http://fanakex.trvpc.com/uploads/1/3/0/8/130874431/visonom_xupopatugumuf_pevubedawe.pdf
    • http://filike.neckbox.com/uploads/1/3/2/6/132680903/pagigo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/47250080173.pdf
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/75953934140.pdf
    • https://cdn.shopify.com/s/files/1/0440/4540/2277/files/78647561920.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/jezirawibavexanojixale.pdf
    • https://cdn.shopify.com/s/files/1/0438/4754/9088/files/craigs_list_holland.pdf
    • https://cdn.shopify.com/s/files/1/0428/3272/4124/files/jofuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/small_wonder_episode.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/15769579252.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/proform_hiit_trainer_pro.pdf
    • https://cdn.shopify.com/s/files/1/0436/9874/9608/files/audience_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/11214316138.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/99508944594.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/22826133498.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079fc.bin
3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79FC 6440 bytes
font_01_sfnt_off000089f0.bin
284d62b0d39a15971ac9522c61855bc6ba3460ce6ec1a298f45fe0c6a91447f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89F0 5316 bytes
font_02_sfnt_off00009bef.bin
f4663cf5a15d043ee19c7c5e096ed3841b0139b2ce9480eb2450cda93b3b5170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEF 10532 bytes
font_03_sfnt_off0000c020.bin
75fb5eda6c80430b94b20cb0daa906e0e98a9f633c3ecfcf71c743d7414a59fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC020 16076 bytes

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