Malicious PDF — malware analysis report

Static analysis result for SHA-256 f50a5eb820338d6c…

MALICIOUS

PDF

43.6 KB Created: 2020-07-31 21:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29330518d1ea68fba86c7d67733e9a76 SHA-1: c0316e78c24eedfa3c05c84629e3f6f6a878d957 SHA-256: f50a5eb820338d6c19a8d60182773a1f54891ab1ea6ffe84c8336b1c7379950c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as an update for Ubuntu command line, which is a common social engineering tactic. The ML classifier strongly flagged this PDF as malicious. The document body contains obfuscated text and the malicious URL, indicating an attempt to deliver a payload or redirect the user to a phishing site.

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=update+ubuntu+command+line In PDF document text
    • http://files.filipemiguelart.com/uploads/1/3/1/6/131606094/1bd4509c93c4d.pdfIn PDF document text
    • http://files.fanitra.com/uploads/1/3/0/8/130813644/lasunuvifufix-xurujilifu.pdfIn PDF document text
    • http://files.foundantiquesde.com/uploads/1/3/0/7/130739239/bonikowogaxunaw_fivegadivok.pdfIn PDF document text
    • http://files.bemisnursery.com/uploads/1/3/0/8/130813841/6102928.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/1/0435/7101/9935/files/93587526477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/potedijomedoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5526/8519/files/zukujabalugaduvus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7366/6213/files/35331307850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6831/0172/files/rajabisezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/jinipamosetafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/zibupuluxugugikikekesesef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4484/7261/files/33205185751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8365/3535/files/44660183394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/21462957121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/zavuwumojepakijub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5235/files/27711353216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/74820988589.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 7

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_off00006c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C79 5076 bytes
SHA-256: 1165a31eccf4a38af7e01acc9210f28ab8df5c462ec61ba6be2673f3c5d784c1
font_01_sfnt_off00007dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAE 10356 bytes
SHA-256: a775acf3077644aff826ab706a92100223bff0612ffcbf8861457aab8417172b

Open this report in the interactive analyzer, or submit your own file for analysis.