Malicious PDF — malware analysis report

Static analysis result for SHA-256 39d0a1cec2ed89a4…

MALICIOUS

PDF

61.4 KB Created: 2020-08-02 13:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac171986772469c1cec8e775c9e99c87 SHA-1: 78662be2f091dccfcd5da4da129ba70bfe6d487f SHA-256: 39d0a1cec2ed89a431bce8f44636335f734fe90f3dc803896055e0c43d1a486c
150 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One prominent link directs to a malicious redirector at "https://ttraff.com/pify?keyword=minecraft+energy+converter", disguised with a "Minecraft energy converter" lure. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=minecraft+energy+converter
    • http://files.francescaarnone.com/uploads/1/3/2/6/132681694/3b58d86290.pdf
    • http://files.mignonplano.com/uploads/1/3/2/7/132740871/ca9d3e75d9f.pdf
    • http://files.windycityknittingguild.com/uploads/1/3/1/8/131860553/kefaj-xuxorinenaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7473/9607/files/diwoteniwotawibibotunis.pdf
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/16116070814.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/obiee_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/4672/2974/files/dejozowipowopipupiliwowow.pdf
    • https://cdn.shopify.com/s/files/1/0434/3863/7208/files/xukekimutixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/3275742785.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70277109097.pdf
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/32117086738.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/jelurakitosatan.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/92719362623.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/86953505774.pdf
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/wibokazidenivudi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8063/7859/files/59241446823.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/9573631706.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8816/files/pebibobarijidukidisorizez.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a60d.bin
c3c92b83ac26affd44213b5339f154657d25928ef84cbf3dd57784ae48033e8e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA60D 4792 bytes
font_01_sfnt_off0000b675.bin
952a388efb14090245a3bb677c67f632ff6bb0cab16e25dcfd5af467b6393cdb
pdf-font-stream PDF embedded font (sfnt) at offset 0xB675 10452 bytes
font_02_sfnt_off0000da33.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA33 4324 bytes