Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab067ca9cf887666…

MALICIOUS

PDF

45.6 KB Created: 2020-08-20 18:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c062547529b11172b663ad81ca920cd9 SHA-1: 9f4a477dbed63ef3a837fb187465bc89a201ae62 SHA-256: ab067ca9cf8876668d0d7ffc748035f83df9c9f67ede93a7bd0a3f3ae99f1256
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, includes text that appears to be a form title ('Osc form 45- 106f1') and the malicious URL itself. The presence of a link farm suggests an attempt to distribute malicious content widely. No scripts were extracted from this sample.

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=osc+form+45-+106f1
    • http://xeludini.owedtonature.com/uploads/1/3/2/8/132814930/gakepujim_negilajejotuj.pdf
    • http://files.rickloper.com/uploads/1/3/1/4/131483019/5133330.pdf
    • http://files.gobeadz.com/uploads/1/3/1/1/131163738/zupudapoxenomitanod.pdf
    • http://files.moocsandlibraries.org/uploads/1/3/0/9/130969981/gabowofosamajigadab.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/el_poder_de_la_kabbalah.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/2614731155.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/wudezaworuwebotewakuzubet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/8410794727.pdf
    • https://cdn.shopify.com/s/files/1/0429/2011/6380/files/sisivixiduwavewavumelez.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6467/files/mokamasopigumiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/rti_amendment_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/didaletonukalev.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/welegegipok.pdf
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/xiwakemavefoma.pdf
    • https://cdn.shopify.com/s/files/1/0431/4244/7265/files/chevrolet_logo_vector_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/ny_driver_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/2877/3021/files/68358793661.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_off000066e8.bin
32b64c97d1113f16fe02704ce489124531ff16b6ba031771af7d7860b168e608
pdf-font-stream PDF embedded font (sfnt) at offset 0x66E8 4840 bytes
font_01_sfnt_off00007758.bin
a9791d58c25225a396678405ba2c957efb9f6476df2e8beb034dd361abcc7bfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x7758 10604 bytes
font_02_sfnt_off00009b78.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B78 4324 bytes