Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fad7984775290a5…

MALICIOUS

PDF

36.5 KB Created: 2020-08-16 23:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b75bc7475f04f818669133631a50e2c6 SHA-1: c44de06d8018a17216bf27840868bb66b4cf57a0 SHA-256: 1fad7984775290a57c992e8817b7852c2e48eac9993da31d4b00b006935fbe3a
150 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains a high number of embedded links. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure, suggesting it's used for phishing or malware distribution. The document body contains a URL that appears to be a lure, possibly related to 'Bhojpuri gana video holi 2019'. The presence of numerous PDF links, many pointing to Shopify domains, suggests a link farm or a method to host malicious content. 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.cc/pify?keyword=bhojpuri+gana+video+holi++2019
    • http://wigara.taylorbarrettphotography.com/uploads/1/3/1/8/131871655/webixot_judirito_wipugivomikok.pdf
    • http://files.rhsbulldogband.org/uploads/1/3/0/7/130739398/xowewiwetaperu.pdf
    • http://rarewi.njgraniteconstruction.com/uploads/1/3/1/3/131380177/43425.pdf
    • http://files.venta-oprema.com/uploads/1/3/1/3/131384777/rolamewu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/android_bitmap_clear_memory.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/viteruteworu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6944/8096/files/physics_textbook_grade_10_12.pdf
    • https://cdn.shopify.com/s/files/1/0429/6835/0886/files/penatalaksanaan_gastroenteritis_akut.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/nazebivokotizizonak.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/watireridifabevitenaze.pdf
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/cardiac_circulation.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3605/files/74895997206.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_off000042f6.bin
2c0e7e5228ea946da7b5a2ce3834825ea67ca0ba46fa4ad05d7cab4decfb27a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42F6 5512 bytes
font_01_sfnt_off000055b1.bin
18c5d2754e95725ede2a4c23811fdae8a5c6b307d579d91ce22b5014e5688d99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B1 9768 bytes
font_02_sfnt_off0000771a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x771A 4324 bytes

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