Malicious PDF — malware analysis report

Static analysis result for SHA-256 506153d7b200fa1b…

MALICIOUS

PDF

47.3 KB Created: 2020-08-11 21:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d094e58f9bffe357fb90b156b1ad002 SHA-1: b291b70788edb89edd9dc81ca04255f155c562fd SHA-256: 506153d7b200fa1b17d0e2a0c605b63eac0310c031476e9aa757f0ad003cb5e0
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic to lure victims. The document body, though heavily corrupted, contains the URL 'https://ttraff.ru/pify?keyword=loraine+boettner+pdf', indicating the primary lure. No scripts were extracted, and the PDF structure itself does not indicate exploitation, but rather social engineering via a deceptive link.

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=loraine+boettner+pdf In PDF document text
    • http://files.paxsonscience.com/uploads/1/3/0/7/130740051/lixumuxubadud_jilubiga_gizasiwuvawev_sezexaxi.pdfIn PDF document text
    • http://files.windhoekradioflyers.com/uploads/1/3/0/7/130776490/nafetu-gevotoxi-wekamovomupuli-dofaxutemetawuz.pdfIn PDF document text
    • http://files.whiterosemarathons.co.uk/uploads/1/3/2/8/132814241/dudawenubigezejub.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/1/0434/7602/5501/files/coffee_stained_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7143/7984/files/zebitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3506/4480/files/42829781220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9506/8567/files/2020_cadillac_sts_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1397/1861/files/watch_digmon_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0807/7473/files/equality_vs_equity_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/71905485218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0422/1846/files/kimuxikabuxavedigisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/pawedovibiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8167/8494/files/7897219483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/hierarchy_of_needs_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/changing_firefox_font_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/21361799738.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_off00006861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6861 5160 bytes
SHA-256: a796af9c4443d4428762357f36992911afd89b6744c8074aa02b90941f1a386d
font_01_sfnt_off00007a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A38 4908 bytes
SHA-256: 525dd4aadb4e82a301c03bee87732ec39a39a75ec330274b37f9c4f7e5121908
font_02_sfnt_off00008aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEE 10596 bytes
SHA-256: 9418a1e519989816ec42f8920aa77115389383bfdebbba2cb0d96e5a70773062