Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48a5ad325aabe18…

MALICIOUS

PDF

35.3 KB Created: 2020-08-02 19:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 503a6a3843739394c295e8569b01fd0c SHA-1: ea7a4310e9bb2c0b99428665ce651d5225a03e55 SHA-256: c48a5ad325aabe1802001214a0edbdc5e4acb446039cb705b0a0b1593af3c577
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body text and embedded links suggest a lure related to downloading a technical book, which is a common social engineering tactic. The primary malicious URL identified is ttraff.ru, which redirects to a page related to 'data communication and networking 5th edition 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=data+communication+and+networking+5th+edition+pdf In PDF document text
    • http://files.martykanova.com/uploads/1/3/0/7/130738836/7724436.pdfIn PDF document text
    • http://files.historyappreciation.com/uploads/1/3/1/4/131409170/e6321.pdfIn PDF document text
    • http://files.thepersonalconciergemn.com/uploads/1/3/2/6/132681576/wotivagusewil-musowilekija.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/1/0430/0141/3785/files/bureluxonudunodifonewuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/lujoxozosatulosugewodaman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0728/7189/files/felurulemugejutotidukakis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4380/5591/files/79509234115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0362/files/8350958082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4052/8792/files/31178468532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5823/files/55863300341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9739/1261/files/square_d_200_amp_manual_transfer_switch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/kukebufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/vomifudufubijovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7073/2950/files/ffxiv_fishing_leves.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 5

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_off00004aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAB 5640 bytes
SHA-256: 28d3209a2552512a03fa417f246b457362245d9c39fba3fc8be3d6d522eccb7c
font_01_sfnt_off00005ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDF 9976 bytes
SHA-256: 51b6a62b2d136e176fc8ca10edd8cd4fea076a0bd15cc8c0cc1325c069b1dcbf

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