Malicious PDF — malware analysis report

Static analysis result for SHA-256 defbaf091ed1de94…

MALICIOUS

PDF

58.5 KB Created: 2020-08-17 10:37:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1ef8ebe2a386d6ee006cedf059d4b66 SHA-1: 8aca1efc30b11a371d26ab7202acb6aa47967b45 SHA-256: defbaf091ed1de9418731323a287cabfbc623a565b0f2120f8ab576c7d300fea
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body appears to be a mix of garbage data and embedded URLs, suggesting an attempt to disguise the malicious intent. The primary attack pattern involves luring the user to click on malicious links, potentially for phishing or to download further malware.

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.ru/pify?keyword=bootstrap+website+templates+github
    • http://files.lacaladesign.com/uploads/1/3/1/4/131437775/podifinelozoja-nojukuroz.pdf
    • http://files.fairlie.school.nz/uploads/1/3/1/1/131164075/xevog-katabokog-tonosusibaxenom-lalilaweruxunar.pdf
    • http://gidoke.krsmithphotography.com/uploads/1/3/1/4/131407552/7715b8fe1249ad7.pdf
    • https://cdn.shopify.com/s/files/1/0448/0181/8781/files/bijesomefax.pdf
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/star_wars_rouge_squadron_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0446/9882/8954/files/wwe_enterence_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/60162013677.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/72955493595.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/balun_balun_dj_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/27500585851.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/59312880025.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7313/files/13578847969.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/abbyy_transformer_plus.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/31462097970.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/63584771835.pdf
    • https://cdn.shopify.com/s/files/1/0436/4845/0718/files/female_body_language_book.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073dd.bin
fa72874b8c381873b432d3b5cea9ecddba20f04e8e1c9face7d560df1136061a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73DD 6588 bytes
font_01_sfnt_off00008457.bin
5318b8435b8070ddb40e256a11a68d566195b9296b93f4b85fec3687d91aa1f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8457 5292 bytes
font_02_sfnt_off00009668.bin
cde60e19f76028f84b94abb16e63b3cb736cb6d72ade357f867e2e35784ce793		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9668 10060 bytes
font_03_sfnt_off0000b919.bin
252a907607fe8cf2d36f1e9c44c1986127e79ee03ae35aaafcaf9f4d1a976959		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB919 16168 bytes
font_04_sfnt_off0000ce1f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1F 4324 bytes

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