Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d1274e9bed19cb…

MALICIOUS

PDF

36.2 KB Created: 2020-08-22 22:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a82cb5311addf7642fdc4272d04831fc SHA-1: 68bdc3028242297db6b916f2ce0d614954684a4a SHA-256: c5d1274e9bed19cbe32c57c68656cfba2835ad5365e7658534fc6967b66f3d5d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body text, though partially garbled, contains keywords related to sheet music, likely serving as a lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=garth+brooks+the+dance+piano+sheet+music, which is flagged as a malicious redirector.

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=garth+brooks+the+dance+piano+sheet+music
    • http://vuvur.missingpersonsrv.com/uploads/1/3/2/3/132303354/598715.pdf
    • http://files.sirenastudio.com/uploads/1/3/0/7/130775197/vegewalomavozux.pdf
    • http://zamedubu.carneysbltavern.com/uploads/1/3/1/3/131380942/zirunorevi_misojasabenen.pdf
    • http://files.grandmongolianadventures.com/uploads/1/3/0/8/130815115/783344.pdf
    • http://files.everythingisnecessary.com/uploads/1/3/0/7/130739076/b2fa28c89d1b13d.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mikawewetekiwu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/35602921461.pdf
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/bamboo_sheets_queen_target.pdf
    • https://cdn.shopify.com/s/files/1/0432/3406/6594/files/brche_vergleichen_klasse_6_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/african_social_and_political_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0447/3815/0549/files/oxford_bookworms_stage_3_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41841620016.pdf
    • https://cdn.shopify.com/s/files/1/0437/5520/8858/files/gangsta_granny_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5582/5567/files/juganurizupesitopopipan.pdf
    • https://cdn.shopify.com/s/files/1/0433/4419/9829/files/canada_business_corporations_act_form_4.pdf
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/aiag_vda_fmea_handbook_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/nulumuwewusip.pdf
    • https://cdn.shopify.com/s/files/1/0434/4876/2529/files/69240338153.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/
    • https://cdn.shopify.com/s/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ecd.bin
dffea342798b571a13882cb8f5b8c9bd21a524d4a546a04396ba99ea896afd41
pdf-font-stream PDF embedded font (sfnt) at offset 0x4ECD 5516 bytes
font_01_sfnt_off00006163.bin
f8edbf7bb9d80efdcdda4aacd5740ceb41cab16abe929e0a70670df2673511b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 9992 bytes