Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc637c718268d17…

MALICIOUS

PDF

52.8 KB Created: 2020-08-26 02:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e001d0d01614665036c839462f0f62c6 SHA-1: 1057664748003f194db1cfd0d7c893e47b535150 SHA-256: adc637c718268d175f1a08906bf6442cbf3a7c086cfe7fac8b301ea03e26a61c
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=mario+luigi+wario+waluigi, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains references to this URL and other PDF files hosted on Shopify, suggesting a coordinated effort to distribute malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=mario+luigi+wario+waluigi
    • http://vakonow.doublejoutfittersny.com/uploads/1/3/1/6/131606271/2717341.pdf
    • http://files.thegreatwines.com/uploads/1/3/0/7/130775402/9adb36d0e3c3d.pdf
    • http://pidasaz.inspirationfitnessandnutrition.com/uploads/1/3/0/7/130775288/koxonisevamukakozi.pdf
    • http://jutof.meganclendenan.com/uploads/1/3/2/6/132683292/mibabogunika.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/kuwimo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/soxap.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/aamirror_plus_apk_indir.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/misilol.pdf
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/16986774099.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1362/files/dd_form_2875.pdf
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/denazoxuwaditemajaxukipo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1290/7423/files/2800230195.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/munibuvitalasifid.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/92774524625.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7424/files/chrome_apps_docs_sheets_slides.pdf
    • https://cdn.shopify.com/s/files/1/0441/1251/1128/files/21621291897.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/63197682060.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070d0.bin
2babc5d285ab5c2f76707d361ccc9ae822fc20baa6c58c96e55b71a292179ad3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D0 5504 bytes
font_01_sfnt_off000083bf.bin
a73728e0674705793a170b2bfab33c729685dc7ea7ef39c52105003079755bab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83BF 4348 bytes
font_02_sfnt_off00009294.bin
02fb36e6dfa5c21b5715275c68f106660a8307cfd03dbc429e47ff733213bd58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9294 11036 bytes
font_03_sfnt_off0000b7b3.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7B3 4324 bytes

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