Malicious PDF — malware analysis report

Static analysis result for SHA-256 49388a7f885c99f8…

MALICIOUS

PDF

118.8 KB Created: 2020-08-02 13:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 055b170644e3b68c10600b45b913c79d SHA-1: 6857a42dffc040b10f059584541bc3947e6eb32a SHA-256: 49388a7f885c99f8c3176156a67ff46f547ad87425f441d1a31121433485758b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=where+is+httpd.+conf'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The PDF also hosts a large number of external links, indicating a link farm for SEO manipulation or traffic redirection. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=where+is+httpd.+conf In PDF document text
    • http://files.decgallery.com/uploads/1/3/1/3/131384789/cc8b20d.pdfIn PDF document text
    • http://files.thefashionanalyst.com/uploads/1/3/1/3/131383624/wezunawe.pdfIn PDF document text
    • http://files.victoriaedgarr.com/uploads/1/3/0/7/130775434/1978109.pdfIn PDF document text
    • http://files.minnesotahistorymuseums.org/uploads/1/3/1/4/131453985/6628160.pdfIn PDF document text
    • http://files.illawarraanxietyclinic.com.au/uploads/1/3/1/6/131606390/6c164.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/1/0428/8974/0441/files/97860196840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/gojug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5136/0164/files/44346010989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/24636469773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0932/5730/files/tizajuwigemamapugodadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/96_monte_carlo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/38116802708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6642/4470/files/tiditidoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9191/7989/files/vokesutedegovetazop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0305/9110/files/tuvedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49605194079.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

Related samples 8

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_off00019954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19954 5048 bytes
SHA-256: 54eed533f1ede719ba62b60e7f3ef84bf2a417c5e67ef36a0f5f825aa1b92cf7
font_01_sfnt_off0001aa97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA97 10228 bytes
SHA-256: 5c4f475e380abe672d009016f402972658e73fe01d149562f1117eb97fb904cb

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