Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff656431155989f6…

MALICIOUS

PDF

54.8 KB Created: 2020-08-11 20:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4495abc3ee8f8355ce32b108b0dbb060 SHA-1: aa3af2c6f601544b2c2347b14a0baa5a8fe9c5d1 SHA-256: ff656431155989f6aea85bf88da3317f40c5b3da01086a22a0f0412f34c6c8f7
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=alice+miller+drama+of+the+gifted+child+pdf`. This URL is embedded within the document body, disguised as a search result for a specific PDF title. The document also contains a PDF link farm heuristic, indicating a large number of external links, many of which point to Shopify domains. The primary malicious IOC is the ttraff.ru redirector, which likely leads to further malicious content or phishing pages.

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=alice+miller+drama+of+the+gifted+child+pdf In PDF document text
    • http://files.thegivingvinethriftstore.com/uploads/1/3/1/3/131381109/xujakofojix-wisik-mafovoje.pdfIn PDF document text
    • http://files.worldcordbloodday.org/uploads/1/3/1/4/131408970/vutizivej-xininokuxo-luzanogema-vokupigunubes.pdfIn PDF document text
    • http://banujopa.useddredge.net/uploads/1/3/1/1/131164110/mevuxemarepi.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/1/0435/6410/5886/files/8906714092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/lebudikeserex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/rivotezaxorizolurem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/fudepedanekev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/bestiario_de_arton_vol_2_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/kokikaxabagenotagow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6686/7364/files/poultry_farming_books_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/raxuzavagix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/19148430210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/89188944042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/83577373563.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000998a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x998A 5380 bytes
SHA-256: 34ed86016f4fb0fb406919b30383783bc08249c7de7228f184e5e8cf4fe56888
font_01_sfnt_off0000aba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA9 10040 bytes
SHA-256: 6fdf7108626e3e939d636ece503af516b9ed1d4530749fa0e59dba265f67eae9