Malicious PDF — malware analysis report

Static analysis result for SHA-256 6425092b342ed011…

MALICIOUS

PDF

49.5 KB Created: 2020-09-17 09:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfc2cbba1a1f0a1b47c074de2af6c2f4 SHA-1: ab57e720bc9809513d74aad3b8713f14de5fcd49 SHA-256: 6425092b342ed011d4aaef2365cd95851db0edc797fc939540e30f59840ce097
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one prominently leading to a malicious redirector at 'ttraff.club'. This suggests a phishing or scam attempt, likely using the document as bait to drive traffic to malicious infrastructure. The presence of numerous other PDF links, many benign, indicates a link farm strategy. No scripts were extracted, but the primary malicious indicator is the redirector URL.

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.club/wix?keyword=adventures+in+middle+earth+player%2527s+handbook+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/jibukazujaxoraf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/fur_elise_sheet_music_flute.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/candy_crop.pdf
    • https://cdn.shopify.com/s/files/1/0440/7423/8102/files/colorimetric_determination_of_aspirin_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0462/4112/0416/files/subnautica_moonpool_console_location.pdf
    • https://cdn.shopify.com/s/files/1/0433/3718/7493/files/bozezowekeviwagidejixumu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/glossary_of_insurance_terms.pdf
    • https://cdn.shopify.com/s/files/1/0437/6195/9073/files/96834786165.pdf
    • https://cdn.shopify.com/s/files/1/0483/7720/0797/files/realidades_1_capitulo_8a_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9675/files/sawoporikoxin.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/betux.pdf
    • https://cdn.shopify.com/s/files/1/0435/0849/8591/files/13628242235.pdf
    • https://cdn.shopify.com/s/files/1/0459/9444/2909/files/fotatikuzazenosevewalovuk.pdf
    • https://cdn.shopify.com/s/files/1/0464/8104/7720/files/basketball_template_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/divinity_2_original_sin_character_build_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/35346558955.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0988/files/kuzudurimuse.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d14.bin
27f74a05eaecce0db6df0bf935a6290392bf6c39fcbc135b1123ecd0263703b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D14 5552 bytes
font_01_sfnt_off00007fca.bin
2fe3ead45ff03fc43a27c46f6852997f2db50de337f4c6922d070050de08990c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCA 13496 bytes
font_02_sfnt_off0000aa8b.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA8B 4324 bytes

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