Malicious PDF — malware analysis report

Static analysis result for SHA-256 985543ec529dbb02…

MALICIOUS

PDF

43.3 KB Created: 2020-08-23 14:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 245f054683d9bf6ec2f1ae2c046bed11 SHA-1: 6d0cc96550e400d3b2918eea7ac73023b80f3d02 SHA-256: 985543ec529dbb0288b2d2e900a0931279d3cb33305f59c2e909cf644a11294f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Adobe photoshop free trial software', suggesting a lure for users to click on the malicious links. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious infrastructure.

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.cc/pify?keyword=adobe+photoshop+free+trial+software In PDF document text
    • http://files.bigpinelodgebooks.com/uploads/1/3/1/8/131857734/pokavag.pdfIn PDF document text
    • http://files.flipbookpublishing.shop/uploads/1/3/0/8/130874587/mojef_jalamev_lonebekadulin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6978/2693/files/ruzukapezibexubetasak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/wedding_program_thank_you.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/nozeriforutok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3275/4841/files/employee_attendance_management_system_project_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/papirepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/79522146912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/47920650833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/nugixufulizefeguxezo.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF7 5032 bytes
SHA-256: 6e7c73472b19aa032398f4b5dfa37134b21446dceaf6241ca3815c580e9d1f1e
font_01_sfnt_off00007034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7034 10016 bytes
SHA-256: 3e469b88a88d9f65525fc6249f3bb25610af4d47e8d34f099771052ef64fcd4d
font_02_sfnt_off00009274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9274 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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