PDF malware analysis — malicious · 550462dd70efc2cc

MALICIOUS

PDF

48.0 KB Created: 2020-08-13 22:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ab51a6a079b8584dd8a51910c86746c5 SHA-1: 4df6396c00202104068455ea687b5965f2dcbafb SHA-256: 550462dd70efc2ccb79051685f1a2520b97d43fb7b1c977b4cd9c9ba3f9dc8b3

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a high number of embedded links, many pointing to external sites, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=accident+report+writing+training, which is flagged as malicious. This suggests the document is designed to trick users into visiting malicious infrastructure under the guise of training materials.

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=accident+report+writing+training
- http://taboguvi.fevershowroom.com/uploads/1/3/1/1/131164250/xizoxavamebalepu.pdf
- http://files.missenglandsclass.com/uploads/1/3/1/3/131378942/xupigubibiremow.pdf
- http://files.massageinnelson.com/uploads/1/3/0/8/130813988/1636862.pdf
- http://files.jensokolfitness.com/uploads/1/3/0/8/130814052/fuzuwabasiri-lujemekosanom-kevijutukazufat-kesuzezagirevu.pdf
- http://gepiniv.savannahbrooklynharrell.com/uploads/1/3/1/6/131607600/konedajeletixiw.pdf
- https://cdn.shopify.com/s/files/1/0438/1619/0112/files/bowflex_workout_plans.pdf
- https://cdn.shopify.com/s/files/1/0455/4902/7493/files/8321421637.pdf
- https://cdn.shopify.com/s/files/1/0434/7589/4437/files/12371080143.pdf
- https://cdn.shopify.com/s/files/1/0435/3094/4671/files/87553941313.pdf
- https://cdn.shopify.com/s/files/1/0435/6728/4387/files/62483222248.pdf
- https://cdn.shopify.com/s/files/1/0429/5491/6003/files/depikolumubawa.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64541570927.pdf
- https://cdn.shopify.com/s/files/1/0428/6958/8124/files/js_blob_download.pdf
- https://cdn.shopify.com/s/files/1/0432/6273/8592/files/american_english_file_level_5_answer_key.pdf
- https://cdn.shopify.com/s/files/1/0432/9222/9787/files/fepejekilidivarovetadagef.pdf
- https://cdn.shopify.com/s/files/1/0430/1701/1353/files/98530589359.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00007650.bin` `7fb5b213472faba612aed32215e80eea73783ff1ef3e3be3343328f42ead2721`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7650	5112 bytes
`font_01_sfnt_off000087c7.bin` `f4bd51b81f883ddd555de236bb5cd81d05251c33cdf3fe97d39dd64390487679`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87C7	13696 bytes

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