Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c4149ddd70ed23…

MALICIOUS

PDF

42.1 KB Created: 2020-08-21 01:26:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a871007666c31db3fb317c2e8aad7ae SHA-1: eee399abb004c09722d9f95185ed23aa1eb83e97 SHA-256: 57c4149ddd70ed235647bd5ea248e6cf359459171416a30cd70252200cf031bd
234 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body also contains text referencing 'Chimera tool crack 2019' and a URL pointing to this redirector. The presence of a password-protected archive lure suggests the PDF is a delivery mechanism for a subsequent payload, likely obtained via the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=chimera+tool+crack+2019 In PDF document text
    • http://nudub.upstudiobklyn.com/uploads/1/3/1/8/131871991/xilizus-tadotage.pdfIn PDF document text
    • http://files.ferrumforge.com/uploads/1/3/0/7/130776558/susutejatiga-dokutave-jabomajabun.pdfIn PDF document text
    • http://files.digginthenew.com/uploads/1/3/1/0/131071166/wixirofufapimudi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2811/7661/files/free_aptitude_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/78846231090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9553/1424/files/82292645157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/vababoparaneba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5583/1445/files/tutorial_tablas_dinamicas_excel_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/adding_and_subtracting_negative_fractions_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/carmilla_castellano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1447/1330/files/portuguese_language_to_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/77836808810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/toshiba_external_hard_drives_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4739/4199/files/android_one_mi_a2_specification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/rich_dad_s_guide_to_investing.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign: ferrumforge.com 4 samples

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6625 5312 bytes
SHA-256: d69732fc685ce082395a9c8622803698388c1f96bda9ff473fde66376b9f1cb2
font_01_sfnt_off00007812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 10460 bytes
SHA-256: cc6119367c0a4cb067ca0d456fda643dc0312e301030e3b92d71ac33ab373349

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