Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d182e183ccded3…

MALICIOUS

PDF

43.5 KB Created: 2020-03-10 03:39:17 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 5ba36058b4ad89c00afd93fe9b866035 SHA-1: 3ce5b4f61c40a95bb0e84e53853e87143ead2d2e SHA-256: e9d182e183ccded33f203f944bb51108758606c902f903b21ec6fb0c7d6b85ff
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a lure related to setting default applications, but its primary function appears to be a link farm. The critical heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, many of which point to other PDF files hosted on various domains. This suggests a tactic to distribute malicious content or engage in SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://magnoliastravelandtouradventures.voyagerwebsites.com/uploads/1/3/0/5/130540554/130540554.html#how+to+make+adobe+reader+default+in+mac PDF link annotation
    • http://angicontracting.com/uploads/1/3/0/4/130488401/6879951.pdfIn PDF document text
    • http://www.quartzoplus.com/uploads/1/3/0/3/130323124/1960632.pdfIn PDF document text
    • http://idjkc.com/uploads/1/3/0/3/130324440/xoxaxobo.pdfIn PDF document text
    • http://autodiscover.paulsturfandtree.com/uploads/1/3/0/2/130273987/femajajanobepiz.pdfIn PDF document text
    • http://hundredrivers.com/uploads/1/3/0/5/130543418/daxow.pdfIn PDF document text
    • http://dougpickeringfurniture.com/uploads/1/3/0/7/130775286/xugodikakavu.pdfIn PDF document text
    • http://www.1simpledownload.com/uploads/1/3/0/6/130603891/6896063.pdfIn PDF document text
    • http://designslgt.com/uploads/1/3/0/2/130287929/xojap.pdfIn PDF document text
    • http://diversityinarchitecture.org/uploads/1/3/0/7/130775698/disunorajideza.pdfIn PDF document text
    • http://xmen-agency.com/uploads/1/3/0/4/130489423/gobuxos.pdfIn PDF document text
    • http://oakland-abyssinia-productions.com/uploads/1/3/0/3/130324047/b43f839e4a39bd.pdfIn PDF document text
    • http://www.artfulaftermathwhimsies.com/uploads/1/3/0/7/130740364/7896689.pdfIn PDF document text
    • http://mommyandbeeboutique.com/uploads/1/3/0/5/130589219/3245458.pdfIn PDF document text
    • http://matthewnimmo.com/uploads/1/3/0/6/130620468/nubom-vikobegidomus-jatixagifasa.pdfIn PDF document text
    • http://transparenttransformations.com/uploads/1/3/0/6/130604519/zebuxetebu_pobesutoxikovog_vufobidita_rijolozibena.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA2 8120 bytes
SHA-256: b584082fc1b0193b00316b9a81c9b8561c7b2c9fc2162a45bfbc61bd0b7fdfb8
font_01_sfnt_off00008b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1D 16116 bytes
SHA-256: d5a8d9ff32518cf0078fe65a5f64578ad4c108fdeee2aa466b72b508dd793def

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