Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd149feb7713f96…

MALICIOUS

PDF

46.0 KB Created: 2020-09-17 15:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 009bff36319ca578b4fbbcc1f026736f SHA-1: c8d751a32436584a1480d149b66597681fb68b17 SHA-256: fdd149feb7713f96174041a93abd2b515facb67f156712e8dc4b85eca8cce4a4
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm, pointing to potentially malicious or spam-related content. The primary link directs to a redirector service, suggesting an attempt to obscure the final destination and potentially engage in phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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.club/wix?keyword=oxygen+reduction+reaction+mechanism
    • http://xosovuw.mirelajoja.com/uploads/1/3/1/3/131379256/jixamafubulolow_vakedej.pdf
    • http://files.ro.megaplot.org/uploads/1/3/1/4/131438150/kemaxepe.pdf
    • http://kivob.smashstudiosfitness.com/uploads/1/3/1/3/131382028/c6ed0a26aa113.pdf
    • http://panodude.majkenbdesign.com/uploads/1/3/1/4/131453527/7b442fcd8.pdf
    • http://nenuvurof.indranisingh.com/uploads/1/3/1/4/131437079/eb3955b9c.pdf
    • http://files.janterradobe.com/uploads/1/3/1/3/131383892/2cc8bb59f1f.pdf
    • http://files.northcoastfoodtours.com/uploads/1/3/1/6/131606733/4953484.pdf
    • http://files.carsandcashauto.com/uploads/1/3/0/9/130969389/9183318.pdf
    • https://4daf09a2-499a-40d7-bb8a-4276f0f45e5a.filesusr.com/ugd/e4a001_3d40615ba1d64b9f8862880d88709426.pdf?index=true
    • https://784ed2ac-c99d-4020-9a4c-4788c771e2ac.filesusr.com/ugd/55f640_4a145b014b4a4c53897c77c00562ad0c.pdf?index=true
    • https://d97cfc2a-a3c6-4bd7-b406-637e03eaf3f8.filesusr.com/ugd/bf0735_1cca1465c2fc40dba6e23796cf255caf.pdf?index=true
    • https://d144dfe7-fc78-4dfd-92ab-4378174d4c6b.filesusr.com/ugd/4a2613_6b16fb60cb8547f787df22500b9a8e4c.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/7762/3194/files/materi_akuntansi_perusahaan_jasa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6327/8758/files/casio_fx991es_plus_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/3730/1653/files/36533429808.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074ac.bin
15f872e7eb8579e7bfa7ae4ea63151583f9e0cf27bbb3bb9f1808c6900611229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74AC 5520 bytes
font_01_sfnt_off00008750.bin
58e1bf09cfee658cfc5f3c079bd81e4a13af88d31e9b7c1532afe4f6f576a8b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8750 10460 bytes

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