Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2926b69695aca8a…

MALICIOUS

PDF

45.5 KB Created: 2020-08-14 07:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4999fa147ad97885edf8aa72c40cb651 SHA-1: f549dced2d245983ec20bade883ed81e33fcd70c SHA-256: a2926b69695aca8a8c6efff66bb87bf11a5821895b999011f9378fa5a5f0e41d
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to lure the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious intent.

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/wb?keyword=anemia%20sideroblastica%20fisiopatologia%20pdf In PDF document text
    • http://files.upclothingline.com/uploads/1/3/1/3/131383318/tilesopeborug.pdfIn PDF document text
    • http://files.jon-morrell.com/uploads/1/3/0/7/130775825/6612049.pdfIn PDF document text
    • http://files.alonsolaraproperties.com/uploads/1/3/1/6/131606854/94f575d767.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/1/0434/1334/0312/files/xalopesotifogisamelotuvav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/semorarepiwit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/xorusizowave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3150/8645/files/65064381180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/44249461515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8988/files/osrs_lumbridge_diary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/39105179815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/sovapunisarixabuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/36441708849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/wanefoseruma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/laboratory_diagnosis_of_entamoeba_histolytica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/rekesufutipumapa.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_off00005cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF1 5604 bytes
SHA-256: fd5ea7705e227e8d73999f1861cefec47e555c27bc5571de2eb195ee665eae22
font_01_sfnt_off00006fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD8 10344 bytes
SHA-256: 02d44d6a2623a06bb5b8efc4bbb174249d8fef9d81868cefdb981b7eaef27dbc
font_02_sfnt_off0000935f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x935F 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15