Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a1d56517e0085f…

MALICIOUS

PDF

66.6 KB Created: 2020-08-04 22:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8acd78f3fccc76720794488a23615c53 SHA-1: 63e72bee87b8222e51d8eaf715fc14203ca3a691 SHA-256: 52a1d56517e0085f1fc469937b5fd97a8377b492c2916bd40588a4db2abd299b
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=materi+akuntansi+dasar+1+pdf'. Another critical heuristic identified a PDF link farm, indicating a large number of outbound links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file's purpose appears to be redirecting users to malicious infrastructure.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=materi+akuntansi+dasar+1+pdf In PDF document text
    • http://xofole.shipmfl.net/uploads/1/3/1/0/131071252/2952148.pdfIn PDF document text
    • http://files.thedwnews.com/uploads/1/3/1/8/131856827/gukame_tovafowavoned_kagafepavutexe_rikivokejafu.pdfIn PDF document text
    • http://files.sungleedesign.com/uploads/1/3/0/7/130775518/lowotemotiroz_lelarukek.pdfIn PDF document text
    • http://files.dyuddesign.com/uploads/1/3/2/6/132681409/puzojomafap.pdfIn PDF document text
    • http://files.americanfriendsofthefatherbashfoundation.org/uploads/1/3/0/8/130814342/3722415.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/1/0431/6567/9776/files/5618278058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/gotalukikajininirutedotok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0313/1542/files/42500625907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2185/8973/files/gikixexukunetefubozobuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1056/3994/files/golirowekogusogugudusag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/ez_go_golf_cart_troubleshooting_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3603/2680/files/39270545653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17418425376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5589/6983/files/2954955472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/html_color_code_transparent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/6451207738.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_off0000c72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC72F 5124 bytes
SHA-256: 992965e60f08b087740ecae2c15d6830565701d3ebbed1f0de6b608248d7d9e5
font_01_sfnt_off0000d8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BE 10868 bytes
SHA-256: 9c74f8115eb225c1d3943d8d7eef282294afb3b8556581210e89c7787892e980