Malicious PDF — malware analysis report

Static analysis result for SHA-256 00fc6486a3e0783a…

MALICIOUS

PDF

42.5 KB Created: 2020-08-30 00:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c33c9af956e37d0a4fc97bb974578219 SHA-1: 4f48d9989a4cc693a5b586a683d225a264ea7d0b SHA-256: 00fc6486a3e0783a2bd48236fc04aa03a3a2e635c8d721e576a1f041a39fba52
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, classifying it as a link farm. One of these links, 'https://ttraff.me/wix?keyword=formas+de+cargar+el%25C3%25A9ctricamente+un+cuerpo', is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious websites.

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.me/wix?keyword=formas+de+cargar+el%25C3%25A9ctricamente+un+cuerpo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_bd27f96660aa42948bf6d071bee223fc.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_f361f642c5114958b9cbbfcb2ee25120.pdf
    • https://static.usrfiles.com/ugd/d1d005_018b0ed7420d4a149d95dfbe53a5526a.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca8b31c9d3a34512a3594702ac7bedb0.pdf
    • https://cdn.shopify.com/s/files/1/0437/9197/4549/files/fancy_feast_canned_food_feeding_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/6704/7077/files/6650357310.pdf
    • https://cdn.shopify.com/s/files/1/0428/5785/7187/files/carol_of_the_bells_piano_solo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8728/1832/files/jekozuvipoxoze.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8369/files/xatajugewikuwux.pdf
    • https://static.usrfiles.com/ugd/e3ff21_22c48247c8c942048f2fedf16b5355ef.pdf
    • https://static.usrfiles.com/ugd/4b874d_5af9eaf2079646979b09a4b4396352f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_00d660db7dc74301b8966681077a6c88.pdf
    • https://static.usrfiles.com/ugd/01e791_ceca2d7bed004f259a6e324428ec0b84.pdf
    • https://static.usrfiles.com/ugd/0a593f_65e1c46fa5fa4464b7a1b002f4a42715.pdf
    • https://static.usrfiles.com/ugd/93c935_c8b221c20c0341fd99658edfb13cc40e.pdf
    • https://static.usrfiles.com/ugd/b8c837_92d2526c93cb496e9193eaea4a828be4.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffa8688089a64fd181585a1459adc7e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5d37feffc15469badd09f3a45dd958d.pdf
    • https://static.usrfiles.com/ugd/3e87bf_2376ece7d0174953ba1e68be075a92fb.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_off000064d9.bin
0566613b0fea08fd8d99ed009192249ae3ec29fdf80dc47c4d2e354db036dd52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D9 5492 bytes
font_01_sfnt_off00007726.bin
48def954ece29e820d57f78d480b901310a1e016e93ffa5bcca23b27dcd0c231		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7726 10896 bytes

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