Malicious PDF — malware analysis report

Static analysis result for SHA-256 50301b59085c1009…

MALICIOUS

PDF

37.0 KB Created: 2020-08-22 17:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97a4f921b43414480babfc1340fd84d7 SHA-1: 8ff8c2c30c501555e2059d6ea6893796c87e7c43 SHA-256: 50301b59085c100900e8277153e98b53bdb68f1aed9af950d0efa6da58626877
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to a search query for 'battlefield 4 android apk', suggesting a lure for potentially unwanted or malicious software. It also hosts a large number of external PDF links, many pointing to Shopify, which is characteristic of SEO link farms used to manipulate search results. The presence of a 'download button' heuristic further supports the malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=battlefield+4+android+apk%252B+data In PDF document text
    • http://files.kidsneedstemtogrow.org/uploads/1/3/1/3/131379530/451369.pdfIn PDF document text
    • http://files.eskynazarene.org/uploads/1/3/0/8/130814397/luvopomigusag.pdfIn PDF document text
    • http://files.dcfitten.com/uploads/1/3/1/4/131437636/1574940.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/1/0430/3070/8385/files/40878676291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1276/3298/files/combining_files_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/dasovilogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6576/8096/files/37982724403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6522/0003/files/spiderman_games_for_ppsspp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/95201516168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7231/3749/files/information_about_computer_science_engineering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7745/2454/files/wordly_wise_book_7_lesson_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/nalavuxemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/vemelazokavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/11664484356.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 2

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_off0000510d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x510D 5060 bytes
SHA-256: d77166007355266a18de66f267f5b4c567bfbdf66963b2d32ed21e99497d3db2
font_01_sfnt_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 10304 bytes
SHA-256: bfec555da922c297697ebdea63f2df9fc00a5bf16f876e6a4bda254bd84a3b8f

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