Malicious PDF — malware analysis report

Static analysis result for SHA-256 a181253b7e2a0f2f…

MALICIOUS

PDF

48.0 KB Created: 2020-08-27 15:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52ab61bd06c1bf8634ee63336fcbaf88 SHA-1: 53f30a594eedbe9f987ba9b1e44c5d202490f1a8 SHA-256: a181253b7e2a0f2f8a2cd47f2b71ce999cff59b9bf206c1fefd7a11be196ac60
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate a PDF link farm designed to lead users to potentially harmful content. The presence of numerous Shopify URLs, some flagged as benign and others unknown, suggests an attempt to blend malicious links with seemingly legitimate ones. The primary malicious URL identified is https://ttraff.me/pify?keyword=spongebob+scaredy+pants+credits.

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.me/pify?keyword=spongebob+scaredy+pants+credits In PDF document text
    • http://files.recaplaboratory.com/uploads/1/3/0/9/130969837/964e60.pdfIn PDF document text
    • http://files.reedcusterband.com/uploads/1/3/2/8/132814022/zabaruribuba.pdfIn PDF document text
    • http://files.uctmed1973.com/uploads/1/3/0/7/130776485/gizawonuwaxa_zaxufola.pdfIn PDF document text
    • http://files.walthamchangemaker.org/uploads/1/3/1/6/131606965/jimel-sokagapofove-xaxamej.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/1/0431/0827/0244/files/darisokezujowekaxapupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6778/files/facebook_login_app_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/buku_saku_biologi_sma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0491/9971/files/adverbs_of_frequency_exercises_b1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7587/8564/files/bofadunevepowirapus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0753/3475/files/history_of_anglicanism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7710/8647/files/38095546860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/35153992901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1463/5165/files/ladupibojegapeleneditofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/bowflex_watch_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8999/2616/files/4459377291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/waxelevaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5761/8850/files/soginezoxowuw.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6769 5552 bytes
SHA-256: 4c34c4f71b1c27649cd12a0a050780c9429d0dc45c1494a7d4d33b4fff35c9a4
font_01_sfnt_off00007a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A55 10388 bytes
SHA-256: 8ec818a3adff4ada3fd2716ca76267d58413b0a355e2caa25a64393859ccc1e2
font_02_sfnt_off00009e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E27 16064 bytes
SHA-256: 62057359ad22ed6c79ab6a94c34af50e7f9192dd49eed379a27769cab1f8071c