Malicious PDF — malware analysis report

Static analysis result for SHA-256 e16d1aed1ffd975b…

MALICIOUS

PDF

42.9 KB Created: 2020-08-22 01:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7df710959db25c6e12e176c91ab9bcb SHA-1: a5dbc80f820c022adb89b9c5aa130bb6d22263bd SHA-256: e16d1aed1ffd975bb095aa23b830523c5acde7767a215d813a606dea6daf4716
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector. The primary URL, https://ttraff.com/pify?keyword=singularity+is+near+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on various domains, suggesting a link farm or redirection scheme. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=singularity+is+near+pdf In PDF document text
    • http://files.rosecitytrombones.com/uploads/1/3/0/7/130775939/ritipoga.pdfIn PDF document text
    • http://xegeri.1small-step.com/uploads/1/3/2/6/132681763/9b1f442d.pdfIn PDF document text
    • http://files.reannhuber.com/uploads/1/3/1/3/131383467/jalelatuvorew.pdfIn PDF document text
    • http://bapitidat.hofnodnj.org/uploads/1/3/0/8/130874359/mobuwivuxotod-bojizixitake-magezop.pdfIn PDF document text
    • http://sevexo.candisyrup.com/uploads/1/3/0/7/130738964/boxisojiled_dadidifaxus_zedunug.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/1/0427/4146/5244/files/toritevuwavewunugiwerezup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30151397197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/72039934221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/colorado_snowpack_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8139/1514/files/mamomofizubizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/vojozojifozijuxono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0485/2386/files/69018547516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/97417759893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/icao_annex_9_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0491/8941/files/norwich_evening_sun_obituaries.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EED 2960 bytes
SHA-256: 3c6502e04658d985b37ed967139d4b1bb7136c1c8ff06868e6b64c17630b7d50
font_01_sfnt_off00006970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6970 5412 bytes
SHA-256: 4d9854a50d1f06e422a4f2a639d43540403a91b9ea33531379842ff4a97ade14
font_02_sfnt_off00007be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE9 10132 bytes
SHA-256: 5d3d4f3be28ebfe8392ddda7bf7960ad7a7a4d6894d3f8219499684afc8b6187