Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed72347e2b86560…

MALICIOUS

PDF

40.9 KB Created: 2020-08-21 23:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c014edfbf94e3eef67dec161773fd5a SHA-1: a1030b5e3676d1bb9916de058668d0967d8ee4af SHA-256: 5ed72347e2b86560d008631f3f97fcdd548e70454edf57392b079bd0d5b59800
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure related to "powerpoint templates" to entice users to click. 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=worship+powerpoint+template
    • http://files.projectufo.org/uploads/1/3/0/7/130739381/4877757.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/magic_jelly_bean.pdf
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/canon_imageprograf_ipf770_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/tomolexa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/64050445936.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/jilenekisegatopitirezexa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3057/5266/files/xorifem.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/nutozazatekaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/4727/2098/files/business_communication_essentials_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/61273196175.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/most_downvoted_post_on_reddit.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_off0000576e.bin
278975ea53da9fb9dd83e3eec68edbe7e1a50eade11a7ddb2da3998d9fbbdcec
pdf-font-stream PDF embedded font (sfnt) at offset 0x576E 4952 bytes
font_01_sfnt_off0000681e.bin
b5fd84e0b6562e8b074fab42883edfc903411bac463173f41da58a8260d1c0be
pdf-font-stream PDF embedded font (sfnt) at offset 0x681E 9652 bytes
font_02_sfnt_off0000891e.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x891E 4324 bytes