Malicious PDF — malware analysis report

Static analysis result for SHA-256 751631a054871be7…

MALICIOUS

PDF

37.8 KB Created: 2020-08-01 23:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f5c7b1fd3d38a254de306716a9236ed SHA-1: fde50f1760fdd97568b0c17f9277f70ec08e5eee SHA-256: 751631a054871be744f79ce6e634e3ccc2e52e41a27d6b6515faf50f2a8810ba
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text suggesting a lure related to 'Cinema hd reddit', likely intended to entice users to click the malicious link. The presence of a large number of external PDF links also suggests a link farm, a common tactic for SEO manipulation or distributing malicious content.

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=cinema+hd+reddit
    • http://files.dogriverhorseclub.com/uploads/1/3/1/3/131382955/8389670.pdf
    • http://files.qigongchristchurch.org/uploads/1/3/1/3/131380177/5dcd6.pdf
    • http://files.haikunorthamerica.com/uploads/1/3/1/8/131856860/xedogapuz.pdf
    • http://files.mysweetblueshop.com/uploads/1/3/0/8/130814387/4332766.pdf
    • http://files.sydneydudley.com/uploads/1/3/2/7/132740978/zadetoguzenafis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/8366/1461/files/vilipofetukejifu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/ruganeturumaxapubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4053/8773/files/xolorubumumobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/14749183255.pdf
    • https://cdn.shopify.com/s/files/1/0435/7786/8443/files/34457402765.pdf
    • https://cdn.shopify.com/s/files/1/0439/2009/7448/files/teneresivi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/3680999196.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/15975505317.pdf
    • https://cdn.shopify.com/s/files/1/0429/5124/5987/files/nufisepone.pdf
    • https://cdn.shopify.com/s/files/1/0438/1140/5986/files/2680602105.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/wasumali.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/bigekiwaz.pdf
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/85425935581.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/87352952234.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_off00004c20.bin
1c9c64439f23c54e7fba6c99e6d7ea3e80f898541401eac3ad8d1ac71ab0d688		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C20 4556 bytes
font_01_sfnt_off00005b54.bin
462653c42b695980c2ce51d6639ec0a66449e1111fc3e2b568c442b7918321c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B54 9932 bytes
font_02_sfnt_off00007c89.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C89 4324 bytes

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