Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d10434f185493dc…

MALICIOUS

PDF

60.7 KB Created: 2020-08-12 02:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d244d4971027d37e0450972db42ee6a1 SHA-1: 7a07f17ef2dfa010ab971c58c89a675e3c7dc3a3 SHA-256: 9d10434f185493dccc5558589f8144522bce941df3437c2b7832ba79db63026b
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a phishing or malware distribution site. The document body itself contains the disguised link and other metadata, suggesting a lure to trick users into clicking the malicious URL. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the true malicious destination.

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.com/wb?keyword=a%20verdadeira%20historia%20da%20chapeuzinho%20vermelho%20pdf
    • http://files.clothdiaperproject.com/uploads/1/3/0/8/130874162/27dc0.pdf
    • http://files.ri4d.com/uploads/1/3/0/7/130740357/fabara-fazuwilumeka-poxidixexora.pdf
    • http://motux.koococafe.com.au/uploads/1/3/1/3/131379578/434c81ad4580cf.pdf
    • http://kuzifiwox.stjosephpinebluff.org/uploads/1/3/1/3/131379578/7ad99e194.pdf
    • http://files.bellaluephotography.com/uploads/1/3/0/7/130776327/xotasafulajeros_kuludovunokar_batozomi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9024/files/chemistry_buffer_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/agentes_economicos_de_circuito_economico.pdf
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/sawoxosupebelobizinosabez.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/30033206649.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/gafobumagejolo.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4843/files/best_reader_app_for_android_phone.pdf
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/wipifejutojirekixu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4354/3447/files/pdf_burdah_dan_artinya.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/lasuxoluxudedefukonariza.pdf
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/workers_compensation_act.pdf
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/xomupiluzavut.pdf
    • https://cdn.shopify.com/s/files/1/0434/0052/8033/files/jatag.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/occupational_safety_and_health_management_thomas_j_anton.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_off000098df.bin
5c88eda828321ffa3cbc697639b73798700110db3efb27f1b26dda4e650afd10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98DF 5376 bytes
font_01_sfnt_off0000ab05.bin
00313a7b609eec718e09ae3e5816d7d1976d5b80e85015e4729bf96ccb0ad577		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB05 13704 bytes
font_02_sfnt_off0000d57b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD57B 4324 bytes

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