Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59dd1bd3b6acc94…

MALICIOUS

PDF

41.2 KB Created: 2020-08-22 09:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8628708383992b5508c508f8a278322c SHA-1: 48a68fa3ae0126fc9b18a9eaa514833f2369c2c5 SHA-256: a59dd1bd3b6acc9439c27845d241283726c49d7316541ecf21e8027e635b1001
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'reply to group text on android' and a URL pointing to a malicious redirector. This suggests a phishing or social engineering attack aiming to direct users to malicious content.

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=reply+to+group+text+on+android In PDF document text
    • http://xatatewej.citizensforcivicrenewal.org/uploads/1/3/1/3/131383434/1633988.pdfIn PDF document text
    • http://jibivos.carpetcleaningstpete.com/uploads/1/3/0/7/130738948/zikuvunowimabafasor.pdfIn PDF document text
    • http://farilonil.kemiesho.com/uploads/1/3/0/8/130874030/9166673.pdfIn PDF document text
    • http://fedik.centrallouisianaorchidsociety.org/uploads/1/3/0/9/130969176/wixifijatote.pdfIn PDF document text
    • http://files.claireallegrataylor.com/uploads/1/3/0/7/130738971/zugoxejomazoj.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/1/0429/0949/9558/files/illinois_cosmetology_test_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1743/6327/files/40987748088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5003/files/rejavugowalogive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/wifinoxofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1297/files/xuwutabomupekazupos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/raripilabaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1808/2711/files/53186524114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6589/2245/files/nolumok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/pdf_robotica_para_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2470/1845/files/gedirigekimotalozoled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5975/7727/files/how_do_you_convert_to_word_document_on_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/96843196803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/android_sdk_install_on_mac.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_off00006140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6140 5128 bytes
SHA-256: 3c8d791f6a04f87483e4e139a6239fa1eb6f7c7a1303f7fd933fdc3b5371568f
font_01_sfnt_off000072d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D4 10808 bytes
SHA-256: 9352b8582ba7f8cc09e77707c5439192252795dbeaf9358643ebcde6df91bfcb

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